IDEC-RH2B-ULCDC12V
| Part # | IDEC-RH2B-ULCDC12V |
Download  | IDEC-RH2B-ULCDC12V |
RH
Relays &
Sockets
RH Series Compact Power Relays
Key features
•ꢀ
SPDT through 4PDT, 10A contacts
•ꢀ
Compact power type relays
•ꢀ
Miniature power relays with a large capacity
•ꢀ
10A contact capacity
•ꢀ
Compact size saves space
Part Number Selection
Part Number
Blade
Terminal
PCB Termi-
nal
Coil Voltage Code
(Standard Stock in bold)
Contact
Model
Standard
RH1B-U
0
RH1V2-U
0
SPDT
With Indicator
—
RH1B-UL
0
RH1B-UC
0
RH1B-ULC
0
RH1B-UT
0
RH1B-UD
0
RH1B-ULD
0
RH2B-U
0
AC6
V
,
A
C12
V
,
AC24V
, AC110
V
,
AC120V
,
AC220
V
,
AC240V
DC6
V
,
DC12V
,
DC24V
,
DC48
V
,
D
C110V
With Check Button
—
With Indicator and Check Button
Top Bracket Mounting
With Diode (DC coil only)
With Indicator and Diode (DC coil only)
Standard
—
—
DC6
V
,
DC12V
,
DC24V
, DC48
V
,
D
C110V
DC12V
,
DC24V
, DC48
V
,
D
C110V
RH1V2-UD
0
—
RH2V2-U
0
RH2V2-UL
0
—
DPDT
With Indicator
RH2B-UL
0
RH2B-UC
0
RH2B-ULC
0
RH2B-UT
0
RH2B-UD
0
AC6
V
,
A
C12
V
,
AC24V
,
AC110-120V
,
AC220-240V
DC6
V
,
DC12V
,
DC24V
, DC48
V
,
D
C100-110V
With Check Button
With Indicator and Check Button
Top Bracket Mounting
With Diode (DC coil only)
With Indicator and Diode (DC coil only)
Standard
—
—
RH2V2-UD
0
DC6
V
,
DC12V
,
DC24V
, DC48
V
,
D
C100-110V
RH2B-ULD
0
RH2V2-ULD
0
RH3B-U
0
RH3V2-U
0
3PDT
With Indicator
RH3B-UL
0
RH3B-UC
0
RH3B-ULC
0
RH3B-UT
0
RH3B-UD
0
RH3B-ULD
0
RH4B-U
0
RH3V2-UL
0
AC6
V
,
A
C12
V
,
AC24V
, AC110
V
,
AC120V
,
AC220
V
,
AC240V
DC6
V
,
DC12V
,
DC24V
,
DC48
V
,
D
C110V
With Check Button
—
With Indicator and Check Button
Top Bracket Mounting
With Diode (DC coil only)
With Indicator and Diode (DC coil only)
Standard
—
—
—
DC6
V
,
D
C12
V
,
D
C24
V
,
D
C48
V
,
D
C110V
—
RH4V2-U
0
4PDT
With Indicator
RH4B-UL
0
RH4B-UC
0
RH4B-ULC
0
RH4B-UT
0
RH4B-UD
0
RH4B-ULD
0
RH4V2-UL
0
AC6
V
,
A
C12
V
,
AC24V
, AC110
V
,
AC120V
,
AC220
V
,
AC240V
DC6
V
,
DC12V
,
DC24V
, DC48
V
,
DC110V
With Check Button
—
With Indicator and Check Button
Top Bracket Mounting
With Diode (DC coil only)
With Indicator and Diode (DC coil only)
—
—
RH4V2-UD
0
DC6
V
,
D
C12
V
,
D
C24
V
,
D
C48
V
,
D
C110V
—
PCB terminal relays are designed to mount directly to a circuit board without any socket.
Ordering Information
When ordering, specify the Part No. and coil voltage code:
(example)
RH3B-U
AC120V
Part No.
Coil Voltage Code
800-262-IDEC
(4332)
•
USA & Canada
773
RH
Relays & Sockets
Sockets
(for Blade Terminal Models)
Relays
RH1B
RH2B
RH3B
RH4B
Standard DIN Rail Mount
1
Finger-safe DIN Rail Mount
1
Through Panel Mount
SH1B-51
PCB Mount
SH1B-62
SH2B-62
SH3B-62
SH4B-62
SH1B-05
SH2B-05
SH3B-05
SH4B-05
SH1B-O5C
SH2B-05C
SH3B-05C
SH4B-05C
1. DIN
Rail mount socket
comes with two
horseshoe clips. Do
not use unless you
plan to insert pullover
wire spring. Replace-
ment horseshoe
SH2B-51
SH3B-51
SH4B-51
clip part number is
Y778-011.
Hold Down Springs & Clips
For DIN
Mount Socket
For Through Panel &
PCB Mount Socket
Appearance
Item
Relay
SY2S-02F1
2
SY4S-02F1
2
SH3B-05F1
2
SH4B-02F1
2
2. Must
use horseshoe clip when
mounting in DIN mount socket.
Replacement horseshoe clip
part number is Y778-011.
RH1B
RH2B
RH3B
RH4B
Pullover Wire Spring
SY4S-51F1
3. Two
required per relay.
Leaf Spring (side latch)
Leaf Spring (top latch)
RH1B, RH2B, RH3B, RH4B
RH1B, RH2B, RH3B, RH4B
SFA-202
3
SFA-101
3
SFA-302
3
SFA-301
3
AC Coil Ratings
Rated Current (mA)
1ꢀ5 at ꢁ20C
AC ꢀ2Hz
AC 62Hz
Coil Resistance (Ω)
125 at ꢁ20C
Operation Characteristics
(against rated values at ꢁ2ºC)
Voltage
(V)
Max. Continuous
Pickup
Voltage
Dropout
Voltage
SPDT DPDT 3PDT 4PDT SPDT DPDT 3PDT 4PDT SPDT DPDT 3PDT 4PDT
Applied Voltage
6
170
86
240
121
60.5
—
330
165
81
387
196
98
150
75
200
100
50
280
140
70
330
165
83
330
165
83
9.4
39.3
153
—
6.4
25.3
103
5.4
21.2
84.5
1,800
12
24
110
42
37
9.6
18.1
21.6
8.4
—
15.5
18.2
18.2
2,200
9.4-
10.8
80%
maximum
30%
minimum
110-120
—
—
—
—
8.0-9.2
—
—
—
—
—
—
110%
120
8.6
4.7
—
4.9
—
—
16.4
8.8
—
19.5
10.7
—
7.5
4.1
—
4.3
—
—
14.2
7.7
—
16.5
9.1
16.5
9.1
—
—
—
10,800 7,360
10,800 7,360
220
220-240
240
4.7-5.4
—
4.0-4.6
—
18,820
—
—
—
8.2
9.8
7.1
8.3
8.3
12,100 9,120
DC Coil Ratings
Coil Resistance (Ω)
125 at ꢁ20C
Operation Characteristics
(against rated values at ꢁ2ºC)
Rated Current (mA)
1ꢀ5 at ꢁ20C
Voltage
(V)
Max. Continuous
Applied Voltage
Pickup
Voltage
Dropout
Voltage
SPDT DPDT 3PDT 4PDT SPDT DPDT 3PDT 4PDT
6
128
64
32
18
—
8
150
75
240
120
60
250
125
62
47
188
40
160
25
100
24
96
12
Standard coil volt-
ages are in
BOLD
.
24
36.9
18.5
8.2-9.0
—
750
650
400
388
1,550
—
80%
maximum
10%
minimum
110%
48
30
31
2,660
—
2,600
12,250
—
1,600
—
100-110
110
—
—
15
12.8
13,800
8,600
7,340
774
RH
Relays &
Sockets
Contact Ratings
UL Ratings
Resistive
General Use
RH1
Horsepower Rating
Maximum Contact Capacity
Allowable Contact Power
Voltage
RH1
RH2
RH1
Rated Load
RH3
RH4
RH3 RH4
RH3
RH4
Continuous
Model
RH2
7A
—
7A
—
RH2
5A 1/3
HP 1/3
HP
7.5A 7.5A
1/6 HP
1/6 HP
Resistive
Load
Inductive
Load
Voltage
Res.
Load
Ind.
Load
Current
240V AC
10A
7.5A
10A
10A
—
7.5A
10A
—
6.5A
—
—
—
—
(V)
120V AC
30V DC
28V DC
—
10A
—
110 AC
220 AC
30 DC
110 AC
220 AC
30 DC
10A
7A
7A
4.5A
7A
1540VA
300W
990VA
210W
—
—
—
—
—
—
—
—
SPDT
10A
10A
10A
10A
10A
7.5A
10A
7.5A
5A
DPDT
3PDT
4PDT
CSA Ratings
1650VA
300W
1100VA
225W
Horse-
power
Rating
7.5A
Resistive
General Use
Voltage
Note: Inductive load for the rated load — cos ø = 0.3, L/R = 7 ms
RH1 RH2 RH3 RH4 RH1 RH2 RH3 RH4
RH1, 2, 3
1/3 HP
1/6 HP
—
240V AC
10A
120V AC
10A
10A
10A
10A
—
7.5A
10A 7.5A 7.5A
10A 7A 7.5A
7A
7A
7A
—
—
5A
7.5A
—
TÜV Ratings
10A
10A
Voltage
240V AC
30V DC
RH1
10A
10A
RHꢁ
10A
10A
RH3
7.5A
10A
RH4
30V DC
10A
7.5A
10A
AC: cos ø = 1.0, DC: L/R = 0 ms
Socket Specifications
Sockets
Terminal
Electrical Rating
250
V
,
1
0A
Wire Size
Torque
(Coil) M3 screws
5.5ꢀ-ꢀ9ꢀin•lbs
9ꢀ-ꢀ11.5ꢀin•lbs
SH1B-05
Maximum up to 2–#12AWG
Maximum up to 2–#12AWG
Maximum up to 2–#12AWG
Maximum up to 2–#12AWG
(contact) M3.5 screws with captive wire clamp
DIN Rail
Mount
Sockets
SH2B-05
SH3B-05
SH4B-05
M3.5 screws with captive wire clamp
300
V
,
1
0A
250
V
,
1
0A
300
V
,
1
0A
9ꢀ-ꢀ11.5ꢀin•lbs
(coil) M3 screws
5.5ꢀ-ꢀ9ꢀin•lbs
9ꢀ-ꢀ11.5ꢀin•lbs
SH1B-05C
(contact) M3.5 screws with captive wire clamp, fingersafe
Finger-safe
DIN Rail
Mount
SH2B-05C
SH3B-05C
SH4B-05C
M3.5 screws with captive wire clamp, fingersafe
Solder
9ꢀ-ꢀ11.5ꢀin•lbs
Through
Panel
Mount
Socket
SH1B-51
SH2B-51
SH3B-51
SH4B-51
300
V
,
1
0A
—
—
SH1B-62
PCB mount
PCB mount
250
V
,
1
0A
300
V
,
1
0A
—
—
—
—
PCB Mount
Socket
SH2B-62
SH3B-62
SH4B-62
Accessories
Item
Appearance
Use with
Part No.
Remarks
The BNDN1000 is designed to accommodate DIN mount sockets.
Made of durable extruded aluminum, the BNDN1000 measures 0.413
(10.5mm) in height and 1.37 (35mm) in width (DIN standard). Standard
length is 39” (1,000mm).
Aluminum
DIN Rail
(1 meter length)
All DIN rail sockets
BNDN1000
DIN Rail End
Stop
DIN rail
BNL5
9.1 mm wide.
Replacement
Hold-Down
Spring Anchor
DIN mount sockets and hold
down springs.
For use on DIN rail mount socket when using pullover wire hold down
spring. 2 pieces included with each socket.
Y778-011
800-262-IDEC
(4332)
•
USA & Canada
77ꢀ
RH
Relays & Sockets
Specifications
Contact Material
Contact Resistance
1
Silver cadmium oxide
50mΩ maximum
Minimum Applicable Load
24V DC, 30 mA; 5V DC, 100 mA (reference value)
SPDT
DPDT
20ms maximum
Operating Time
2
Release Time
2
3PDT
4PDT
25ms maximum
20ms maximum
25ms maximum
SPDT
DPDT
3PDT
4PDT
SPDT
DPDT
3PDT
4PDT
AC: 1.1VA (50Hz), 1VA (60Hz)
AC: 1.4VA (50Hz), 1.2VA (60Hz)
AC: 2VA (50Hz), 1.7VA (60Hz)
AC: 2.5VA (50Hz), 2VA (60Hz)
100MΩ minimum (500V DC megger)
DC: 0.8W
DC: 0.9W
DC: 1.5W
DC: 1.5W
Power Consumption
(approx.)
Insulation Resistance
Between live and dead parts:
Between contact and coil:
2,000V AC, 1 minute
2,000V AC, 1 minute
SPDT
Between contacts of the same pole:
1,000V AC, 1 minute
3
Dielectric Strength
Between live and dead parts:
Between contact and coil:
2,000V AC, 1 minute
2,000V AC, 1 minute
DPDT
3PDT
4PDT
Between contacts of different poles: 2,000V AC, 1 minute
Between contacts of the same pole:
1,000V AC, 1 minute
Electrical:
Mechanical:
1,800 operations/hour maximum
18,000 operations/hour maximum
Operating Frequency
Vibration Resistance
Damage limits:
Operating extremes:
10 to 55Hz, amplitude 0.5 mm
10 to 55Hz, amplitude 0.5 mm
Damage limits:
Operating extremes:
1,000m/s
2
(100G)
Shock Resistance
Mechanical Life
200m/s
2
(20G – SPDT, DPDT)
100m/s
2
(10G – 3PDT, 4PDT)
50,000,000 operations minimum
DPDT
500,000 operations minimum (120V AC, 10A)
SPDT
3PDT
4PDT
Electrical Life
200,000 operations minimum (120V AC, 10A)
–25 to +70°C (no freezing)
SPDT
DPDT
3PDT
4PDT
Operating
Temperature
4
Operating Humidity
Weight (approx.)
45 to 85% RH (no condensation)
SPDT: 24g, DPDT: 37g, 3PDT: 50g, 4PDT: 74g
Note: Above values are initial values.
1. Measured
using 5V DC, 1A voltage drop method
2. Measured
at the rated voltage (at 20°C), excluding contact bouncing
Release time of relays with diode: 40 ms maximum
3. Relays
with indicator or diode: 1000V AC, 1 minute
4. For
use under different temperature conditions, refer to Continuous Load Current vs. Operating Temperature Curve. The operating
temperature range of relays with indicator or diode is –25 to +40°C.
776
RH
Relays &
Sockets
Characteristics (Reference Data)
DC Load
Electrical Life Curves
AC Load
1000
(RH1)
500
1000
120V AC resistive
(RH1)
500
30V DC resistive
100
50
100
50
100V DC resistive
30V DC inductive
100V DC inductive
20
10
20
240V AC inductive
240V AC resistive
10
120V AC inductive
10
1
2
3
4
5
6
7
8
9
10
1
2
3
4
5
6
7
8
9
Load Current (A)
Load Current (A)
(RH2)
1000
(RH2)
1000
500
120V AC resistive
30V DC resistive
500
100
50
100
50
30V DC
100V DC resistive
100V DC inductive
inductive
240V AC resistive
120V AC inductive
240V AC inductive
20
10
20
10
1
2
3
4
5
6
7
8
9
10
1
2
3
4
5
6
7
8
9
10
Load Current (A)
Load Current (A)
(RH3/RH4)
(RH3/RH4)
1000
1000
500
120V AC resistive
30V DC resistive
500
30V DC inductive
100
50
100
50
20
10
100V DC resistive
100V DC inductive
20
10
240V AC inductive
240V AC resistive
120V AC inductive
1
2
3
4
5
6
7
8
9
10
1
2
3
4
5
6
7
8
9
10
Load Current (A)
Load Current (A)
Maximum Switching Capacity
(RH1)
(RH2/RH3/RH4)
10.0
10.0
AC resistive
AC inductive
AC resistive
AC inductive
5.0
5.0
DC resistive
DC resistive
1.0
0.5
1.0
0.5
DC inductive
DC inductive
0.1
0.1
1
1
5
10
50
100
200 300
5
10
50
100
200 300
Load Voltage (V)
Load Voltage (V)
800-262-IDEC
(4332)
•
USA & Canada
777
RH
Relays & Sockets
Continuous Load Current vs. Operating Temperature Curve (Basic Type, With Check Button, and Top Bracket Mounting Type)
Note: The rated voltage is
(RH3/RH4)
Note: The rated voltage is
(RH1)
Note: The rated voltage is
(RH2)
applied to the coil.
applied to the coil.
applied to the coil.
100
90
80
70
60
50
40
30
20
10
0
100
90
80
70
60
50
40
30
20
10
0
100
90
80
70
60
50
40
30
20
10
0
DC Coil
DC Coil
AC Coil
AC/DC Coil
AC Coil
1
2 3 4 5 6 7 8 9
10
1
2 3 4 5 6 7 8 9
10
1
2
3
4
5
6
7
8
9
10
Load Current (A)
Load Current (A)
Load Current (A)
Internal Connection (View from Bottom)
Basic Type
SPDT
DPDT
3PDT
4PDT
With Check Button
Front
1
5
9
2
6
3
7
4
8
Pushbutton
10
11
12
Contacts can be operated by pressing the
check button.
(+)
13 (–)
14
With Indicator (-L type)
SPDT
3PDT
4PDT
DPDT
1
5
9
1
5
9
2
6
10
4
8
12
1
5
9
4
8
12
1
5
9
2
6
10
3
7
11
4
8
12
When the relay is energized,
the indicator goes on.
Below
100V
AC/DC
Below
24V AC/
DC
13
14
13( – )
( +
)
1
4
( + )
( – )
( + )
14
( – )
13
13( – )
( +
)
1
4
•ꢀ
Relay coils less than 100V
DC do not contain a protec-
tion diode (except DPDT).
•ꢀ
Relay coils below 100V
use LED indicator, coils
above 100V use neon lamp
indicator.
1
5
9
1
5
9
4
8
12
1
5
9
2
6
4
8
1
5
9
2
6
3
7
4
8
100V
AC/DC
and over
24V AC/
DC and
over
10
12
10
11
12
•ꢀ
LED color of DPDT model
is green
13
14
13 (–)
(+) 14
(–)
(+)
( – )
( + )
13
14
( – )
13
( + )14
With Diode (-D type)
SPDT
DPDT
3PDT
4PDT
Contains a diode to absorb the back emf
generated when the coil is de-energized. The
release time is slightly longer. Available for DC
coil only.
1
5
9
1
5
9
4
8
1
5
9
2
6
4
8
1
5
9
2
6
3
7
4
8
12
10
12
10
11
12
13
(–)
14
(+)
(–)
(+)
14
13
•ꢀ
Diode Characteristics
(+)
14
(+)
14
13 (–)
(–)
13
Reverse withstand voltage: 1,000V
Forward current: 1A
778
RH
Relays &
Sockets
With Indicator LED & Diode (-LD type)
SPDT
3PDT
4PDT
DPDT
1
5
9
1
5
9
4
8
12
Below
24V AC/
DC
Below
100V DC
13
14
( + )
( – )
( – )
( + )14
13
Contains an LED indicator and
a surge absorber, and has the
same height as the basic type.
1
5
9
LED color of DPDT model is
green.
1
5
9
4
8
12
24V AC/
DC and
over
100V DC
and over
( + )
14
( – )
13
13
( – )
14
( + )
Dimensions (mm)
RH1B-U/RH1B-UL/RH1B-UD/RH1B-ULD
RH2B-U/RH2B-UL/RH2B-UD/RH2B-ULD
RH3B-U/RH3B-UL/RH3B-UD/RH3B-ULD
T
o
tal length from panel surface including relay socket
T
o
tal length from panel surface including relay socket
T
o
tal length from panel surface including relay socket
(
)
(
)
SH1B-05: 61.5
63.5
max.,
SH1B-51: 39.6
41.6
max.
(
)
(
)
SH2B-05: 61.5
63.5
max.,
SH2B-51: 39.6
41.6
max.
(
)
(
)
SH3B-05: 61.5
63.5
max.,
SH3B-51: 39.6
41.6
max.
Dimensions in the (
include a hold-down spring.
)
Dimensions in the (
include a hold-down spring.
)
Dimensions in the (
include a hold-down spring.
)
ø2.6 hole
ø2.6 hole
ø2.6 hole
1
5
1
5
4
8
9
9
12
14
13 14
2
6
4
8
1
5
13
5.4
6.4
14
9
10
11
35.6 max.
6.4
21
13
14
35.6 max.
6.4
31
35.6 max.
RH4B-U/RH4B-UL/RH4B-UD/RH4B-ULD
RH1B-UT
RH2B-UT
T
o
tal length from panel surface including relay socket
(
)
(
)
SH4B-05: 61.5
63.5
max.,
SH4B-51: 39.6
41.6
max.
Dimensions in the (
include a hold-down spring.
)
ø2.6 hole
ø2.6 hole
1
5
1
5
4
8
9
13 14
9
12
14
13
ø2.6 hole
3.5
14.5
2
5.4
6.4
3.5
2
35.6 max.
21.5
35.6 max.
6.4
1
5
2
6
3
7
4
8
9
10
11
12
13
14
6.4
41
35.6 max.
RH3B-UT
RH4B-UT
3.5
ø2.6 hole
2
3.5
ø2.6 hole
1
5
2
6
4
8
1
5
2
6
3
7
4
8
9
10
12
9
10
11
12
13
14
13
14
21.5
31.5
2
35.6 max.
42 max.
6.4
28
41.5
35.6 max.
6.4
800-262-IDEC
(4332)
•
USA & Canada
779
RH
Relays & Sockets
Dimensions con’t (mm)
RH1V2-U/RH1V2-UD
RH2V2-U/RH2V2-UL/RH2V2-UD
8-ø2.4 holes
0.5
3-ø2.4 holes
2-ø2 holes
0.5
1
5
1
5
4
8
9
13 14
9
12
14
13
35.6 max.
4.6
14
10
14.2
21
35.6 max.
4.6
4.4
RH3V2-U/RH3V2-UL/RH3V2-D
RH4V2-U/RH4V2-UL/RH4V2-UD
30
10
11-ø2.4 holes
10
10
14-ø2.4 holes
1
5
2
6
4
8
1
5
2
6
3
7
4
8
9
10
11
9
10
11
12
14
13
14
13
0.5
4.6
31
0.5
41
35.6 max.
35.6 max.
4.6
Standard DIN Rail Mount Sockets
SH1B-05
SH2B-05
17
8
31.5
18
22
31.5
18
DIN Rail
(BNDN)
DIN Rail
(BNDN)
Terminal Arrangement
M3.5
T
e
rminal
Screw
8
M3.5
T
e
rminal
Screw
Terminal Arrangement
2-ø4.2 Mounting Holes
(or M4
T
a
pped Holes)
5
1
2-ø4.2 Mounting Holes
(or M4 Tapped Holes)
8
4
5
1
16
26
4.4 max.
5.5 min.
14 13
9
5.5 min.
4.8 min.
4 max.
ø3.6 min.
5.9 max.
M3
T
e
rminal
Screw
14 13
12
9
4.4 max.
7.9 max.
(
)
T
o
p View
(
)
Top View
14.5
25
16
20
14.5
25
26
30
7.9 max.
ø3.2 min.
ø3.6 min.
(For terminals 13 and 14)
(For terminals 1, 5, and 9)
SH3B-05
SH4B-05
31.5
31.5
18
42
32
DIN Rail
(BNDN)
DIN Rail
(BNDN)
8
18
8
M3.5 Terminal
Screw
M3.5 Terminal
Screw
Terminal Arrangement
Terminal Arrangement
2-ø4.2 Mounting Holes
(or M4 Tapped Holes)
2-ø4.2 Mounting Holes
(or M4 Tapped Holes)
8
4
6
2
5
1
7
3
8
4
6
2
5
1
46
36
14
12 11
13
9
4.4 max.
5.5 min.
14
13
9
4.4 max.
5.5 min.
10
12 10
(
)
Top View
46
50
14.5
25
(
)
Top View
7.9 max.
36
40
14.5
7.9 max.
ø3.6 min.
25
ø3.6 min.
782
RH
Relays &
Sockets
Dimensions con’t (mm)
Finger-safe DIN Rail Mount Sockets
SH1B-05C
SH2B-05C
36
25
22
17
36
M3.5 Terminal
7
DIN Rail
(BNDN)
M3.5 Terminal
Screw
7
Screw
Terminal Arrangement
25
DIN Rail
(BNDN)
Terminal Arrangement
8
4
5
1
2-ø4.2 Mounting Holes
(or M4 Tapped Holes)
5
1
2-ø4.2 Mounting Holes
(or M4 Tapped Holes)
26
16
14 13
12
M3 Terminal
Screw
9
14
13
9
(
)
Ring terminals
cannot be used.
Top View
18.7
Ring terminals
cannot be used.
26
30
18.7
29.5
(
)
16
20
Top View
29.5
SH3B-05C
SH4B-05C
When using
BAA/BAP: 33
32
M3.5 Terminal
Screw
36
25
42
7
DIN Rail
(BNDN)
Terminal Arrangement
25
7
DIN Rail
(BAA/BAP)
Terminal Arrangement
8
4
6
2
5
1
2-ø4.2 Mounting Holes
(or M4 Tapped Holes)
8
4
6
2
5
1
7
3
2-ø4.2 Mounting Holes
(or M4 Tapped Holes)
36
46
14
12 10
13
9
14
12
13
9
11
10
(
)
Top View
Ring terminals
cannot be used.
18.7
29.5
36
40
Ring type crimping
terminals cannot be used.
(
)
Top View
18.7
29.5
46
50
Through Panel Mount Socket
SH1B-51
SH2B-51
SH3B-51
SH4B-51
800-262-IDEC
(4332)
•
USA & Canada
781
RH
Relays & Sockets
Dimensions con’t (mm)
PCB Mount Sockets
SH1B-62
SH2B-62
6.8
21.5 min.
ø2.4 holes
3-
Terminal Arrangement
Terminal Arrangement
2.85
18 min.
15.5
10
1
5
9
4
8
12
1
5
9
4.4
13 14
13 14
3
(Bottom View)
21.2
18
(Bottom Viewꢀ
3
11
11
ø2 holes
2-
15
8-ø2.4 holes
15
2
1.5
(Tolerance 0.1ꢀ
2
* 36 min. when using
hold-down springs
(Tolerance 0.1)
* 34 min. when using
hold-down springs
12.2
SH3B-62
SH4B-62
36 min.
21.3
10 10
Terminal Arrangement
6.85
45 min.
31.3
10 10 10
Terminal Arrangement
7.35
1
5
9
2
6
3
7
4
8
1
5
9
2
6
4
8
10 11 12
10 12
13
14
13
14
3
45
(Bottom View)
3
36
(Bottom View)
11
15
11
15
14-ø2.4 holes
(Tolerance 0.1)
ø2.4 holes
11-
2
2
* 36 min. when using
hold-down springs
39.2
(Tolerance 0.1)
* 36 min. when using
hold-down springs
30.2
78ꢁ
Operating Instructions
Relays &
Sockets
Operating Instructions
Driving Circuit for Relays
Protection for Relay Contacts
1. To ensure correct relay operation, apply rated voltage to the relay coil.
1. The contact ratings show maximum values. Make sure that these values are
not exceeded. When an inrush current flows through the load, the contact
may become welded. If this is the case, connect a contact protection circuit,
such as a current limiting resistor.
2. Input voltage for the DC coil:
A complete DC voltage is best for the coil power to make sure of stable relay
operation. When using a power supply containing a ripple voltage, suppress
the ripple factor within 5%. When power is supplied through a rectification
circuit, the relay operating characteristics, such as pickup voltage and dropout
voltage, depend on the ripple factor. Connect a smoothing capacitor for better
operating characteristics as shown below.
2. Contact protection circuit:
When switching an inductive load, arcing causes carbides to form on the
contacts, resulting in increased contact resistance. In consideration of contact
reliability, contact life, and noise suppression, use of a surge absorbing circuit
is recommended. Note that the release time of the load becomes slightly
longer. Check the operation using the actual load. Incorrect use of a contact
protection circuit will adversely affect switching characteristics. Four typical
examples of contact protection circuits are shown in the following table:
Pulsation
Smoothing
Capacitor
Emin Emax
Emean
DC
+
–
Relay
R
Emax – Emin
Emean
Ripple Factor (%)
¥ 100%
This protection circuit can be used when the load
impedance is smaller than the RC impedance in an
AC load power circuit.
•ꢀ
R: Resistor of approximately the same resistance
value as the load
Emax =
Maximum of pulsating current
Emin =
Minimum of pulsating current
Emean =
DC mean value
Power
Ind. Load
C
R
3. Leakage current while relay is off:
•ꢀ
C:0.1 to 1 µF
When driving an element at the same time as the relay operation, special
consideration is needed for the circuit design. As shown in the incorrect
circuit below, leakage current (Io) flows through the relay coil while the relay
is off. Leakage current causes coil release failure or adversely affects the
vibration resistance and shock resistance. Design a circuit as shown in the
correct example.
This protection circuit can be used for both AC and
DC load power circuits.
R: Resistor
of approximately the same resistance
value as the load
C: 0.1
to 1 µF
This protection circuit can be used for DC load power
circuits. Use a diode with the following ratings.
Reverse withstand voltage: Power voltage of the
load circuit x 10
+
Incorrect
Correct
TE
R
Power
–
R
Ind. Load
D
Io
Forward current: More than the load current
This protection circuit can be used for both AC and
DC load power circuits.
For a best result, when using a power voltage of 24
to 48V AC/DC, connect a varistor across the load.
When using a power voltage of 100 to 240V AC/DC,
connect a varistor across the contacts.
4. Surge suppression for transistor driving circuits:
When the relay coil is turned off, a high-voltage pulse is generated, causing a
transistor to deteriorate and sometimes to break. Be sure to connect a diode
to suppress the back electromotive force. Then, the coil release time becomes
slightly longer. To shorten the coil release time, connect a Zener diode
between the collector and emitter of the transistor. Select a Zener diode with
a Zener voltage slightly higher than the power voltage.
Power
Ind. Load
3. Do not use a contact protection circuit as shown below:
This protection circuit is very effective in arc suppression when
Back emf
opening the contacts. But, the capacitor is charged while the
contacts are opened. When the contacts are closed, the capacitor
is discharged through the contacts, increasing the possibility of
contact welding.
suppressing diode
C
Load
+
Power
Relay
R
–
This protection circuit is very effective in arc suppression when
opening the contacts. But, when the contacts are closed, a current
flows to charge the capacitor, causing contact welding.
C
Load
Power
Generally, switching a DC inductive load is more difficult than switching a DC
resistive load. Using an appropriate arc suppressor, however, will improve the
switching characteristics of a DC inductive load.
Soldering
1. When soldering the relay terminals, use a soldering iron of 30 to 60W, and
quickly complete soldering (within approximately 3 seconds).
2. Use a non-corrosive rosin flux.
800-262-IDEC
(4332)
•
USA & Canada
817
Operating Instructions
Relays & Sockets
Operating Instructions con’t
Other Precautions
2. UL and CSA ratings may differ from product rated values determined by IDEC.
1. General notice:
To maintain the initial characteristics, do not drop or shock the relay.
3. Do not use relays in the vicinity of strong magnetic field, as this may affect
relay operation.
The relay cover cannot be removed from the base during normal operation. To
maintain the initial characteristics, do not remove the relay cover.
Use the relay in environments free from condensation, dust, sulfur dioxide
(SO
2
), and hydrogen sulfide (H
2
S).
Make sure that the coil voltage does not exceed applicable coil voltage range.
Safety Precautions
•ꢀ
Turn off the power to the relay before starting installation, removal, wiring,
maintenance, and inspection of the relays. Failure to turn power off may
cause electrical shock or fire hazard.
Precautions for the RU Relays
•ꢀ
Before operating the latching lever of the RU relay, turn off the power to
the RU relay. After checking the circuit, return the latching lever to the origi-
nal position.
•ꢀ
Observe specifications and rated values, otherwise electrical shock or fire
hazard may be caused.
•ꢀ
Do not use the latching lever as a switch. The durability of the latching lever
is a minimum of 100 operations.
•ꢀ
Use wires of the proper size to meet voltage and current requirements. Tight-
en the terminal screws on the relay socket to the proper tightening torque.
•ꢀ
When using DC loads on 4PDT relays, apply a positive voltage to terminals of
neighboring poles and a negative voltage to the other terminals of neighbor-
ing poles to prevent the possibility of short circuits.
•ꢀ
Surge absorbing elements on AC relays with RC or DC relays with diode are
provided to absorb the back electromotive force generated by the coil. When
the relay is subject to an excessive external surge voltage, the surge absorb-
ing element may be damaged. Add another surge absorbing provision to the
relay to prevent damage.
•ꢀ
DC relays with a diode have a polarity in the coil terminals. Apply the DC volt-
age to the correct terminals.
818
