RU Series
RU Series Universal Relays
Switches & Pilot Lights
Relays & Sockets
Full featured universal miniature relays
Designed with environment taken into consideration
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Two terminal styles: plug-in and PCB mount
Non-polarized LED indicator available on plug-in relays
No internal wires, lead-free construction
Cadmium-free contacts
Mechanical flag indicator available on plug-in relays
Manual latching lever with color coding for AC or DC coil
Snap-on yellow marking plate; optional marking plates are available in four other colors
Maximum contact ratings: 10A (RU2), 6A (RU4), 3A (RU42)
UL Recognized, CSA Certified, EN Compliant
UL508
CSA C22.2 No. 14
File No. E66043
CSA C22.2 No. 14
CSA File No. LR35144
EN61810-1
Display Lights
Relays & Sockets
With Latching or Momentary Lever
Mechanical Indicator*
The contact position can be confirmed through
the five small windows.
Marking Plate
Standard yellow marking plate is easily replaced
with optional marking plates in four colors for
easy identification of relays.
LED Indicator*
Non-polarized green LED indicator is standard
provision for plug-in terminal, latching lever
types
Latching and Momentary Lever
Using the lever, operation can be checked without energiz-
ing the coil. The lever is color coded for AC and DC coils.
Latching Momentary
AC coil: Orange
Red
DC coil: Green
Blue
In Normal Operation
Timers
Note: Turn off the power to the relay coil when using the latching
lever. After checking the operation, return the latching lever
in the normal position.
Terminal Blocks
Standard (without lever)
AC/DC Color Marking
For identification of AC or DC coils.
AC coil: Yellow
DC coil: Blue
Mechanical Indicator*
Marking Plate
LED Indicator*
Non-polarized green LED indicator is standard
provision for plug-in terminal types.
Coil Voltage
24V AC
100 to 110V AC
110 to 120V AC
200 to 220V AC
220 to 240V AC
24V DC
6V DC
12V DC
*Not available on PCB type.
Tape Color
White
Clear
Blue
Black
Red
Green
Circuit Breakers
AC Coil
DC Coil
48V DC
110V DC
Voltage marking on
yellow tape
754
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Relays & Sockets
Part Number Selection
RU Series
Switches & Pilot Lights
Part Number
Contact
DPDT (10A)
Model
Standard
With RC (AC coil only)
With diode (DC coil only)
PCB
4PDT (6A)
Standard
With RC (AC coil only)
With diode (DC coil only)
PCB
4PDT Bifurcated (3A)
Standard
With RC (AC coil only)
With diode (DC coil only)
PCB
Standard
RU2S-C-
RU2S-CR-
RU2S-CD-
RU2V-NF-
RU4S-C-
RU4S-CR-
RU4S-CD-
RU4V-NF-
RU42S-C-
RU42S-CR-
RU42S-CD-
RU42V-NF-
With Latching Lever
RU2S-
RU2S-R-
RU2S-D-
—
RU4S-
RU4S-R-
RU4S-D-
—
RU42S-
RU42S-R-
RU42S-D-
—
With Momentary Lever
RU2S-M-
RU2S-MR-
RU2S-MD-
—
RU4S-M-
RU4S-MR-
RU4S-MD-
—
RU42S-M-
RU42S-MR-
RU42S-MD-
—
Coil Voltage Code
(Standard Stock in bold)
A24,
A110, A220
D6, D12,
D24,
D48, D110
A110, A220
D6, D12,
D24,
D48, D110
A24, A110, A220
D6, D12,
D24,
D48, D110
A24,
A110, A220
D6, D12,
D24,
D48, D110
A110, A220
D6, D12, D24, D48, D110
A24,
A110,
A220
D6, D12,
D24,
D48, D110
A24, A110, A220
D6, D12,
D24,
D48, D110
A110, A220
D6, D12, D24, D48, D110
Display Lights
Relays & Sockets
A24, A110, A220
D6, D12,
D24,
D48, D110
1. Plug-in terminal models have an LED indicator and a mechanical indicator as standard.
2. PCB models do not have an LED indicator or a mechanical indicator.
Ordering Information
When ordering, specify the Part No. and coil voltage code:
(example)
RU2S-C
Part No.
A110
Coil Voltage Code
Coil Voltage Table
Coil Voltage Code
Coil Rating
A24
24V AC
A110
110-120V AC
A220
220-240V AC
D6
6V DC
D12
12V DC
D24
24V DC
D48
48V DC
D110
110V DC
Timers
Sockets
Relays
RU2S (DPDT)
RU4S (4PDT)
RU42S (4PDT)
Spring Clamp
DIN Rail Mount
SU2S-11L
SU4S-11L
Standard DIN
Rail Mount
SM2S-05
SY4S-05
Finger-safe DIN
Rail Mount
SM2S-05C
SY4S-51
SY4S-05C
Panel Mount
PCB Mount
SM2S-61
SM2S-62
SY4S-61
SY4S-62
Terminal Blocks
Circuit Breakers
USA: 800-262-IDEC
Canada: 888-317-IDEC
755
RU Series
Hold Down Springs & Clips
Switches & Pilot Lights
Appearance
Description
Relay
For DIN
Mount Socket
For Through
Panel & PCB
Mount Socket
Min Order Qty
Relays & Sockets
Pullover Wire
Spring
RU2S/RU4S/
RU42S
SY4S-02F1
SY4S-51F1
10
Leaf Spring
(side latch)
RU2S/RU4S/
RU42S
SFA-202
SFA-302
20
Display Lights
Leaf Spring
(top latch)
RU2S/RU4S/
RU42S
SFA-101
SFA-301
Accessories
Name
Marking Plate
Part Number
RU9Z-P*
Color Code *
A (orange), G (green), S (blue), W (white), Y (yellow)
Min. Order Qty.
10
Specify a color code when ordering. The marking plate can be removed from the relay by inserting a flat screw-
driver under the marking plate.
Relays & Sockets
Specifications
Model (Contact)
Contact Material
Contact Resistance
1
Minimum
Applicable Load
2
Operate Time
3
Release Time
3
Power Consumption
Insulation Resistance
24V DC, 5 mA
(reference value)
RU2 (DPDT)
Silver alloy
RU4 (4PDT)
Silver (gold clad)
50 mΩ maximum
1V DC, 1 mA
20 ms maximum
20 ms maximum
AC: 1.1 to 1.4VA (50 Hz), 0.9 to 1.2VA (60 Hz) DC: 0.9 to 1.0W
100MΩ minimum (500V DC megger)
Between contact and coil: 2500V AC, 1 minute
Dielectric Strength
Between contacts of different poles:
2500V AC, 1 minute
2000V AC, 1 minute
Between contacts of the same pole: 1000V AC, 1 minute
Operating Frequency
Electrical: 1800 operations/h maximum
Mechanical: 18,000 operations/h maximum
Damage limits: 10 to 55 Hz, amplitude 0.5 mm
Operating extremes: 10 to 55 Hz, amplitude 0.5 mm
Damage limits: 1000 m/s
2
(100G)
Operating extremes: 150 m/s
2
(15G)
AC: 50,000,000 operations
DC: 100,000,000 operations
50,000,000 operations
1V DC, 0.1 mA
RU42 (4PDT)
Silver-nickel (gold clad)
Terminal Blocks
Timers
Vibration Resistance
Shock Resistance
Mechanical Life
Electrical Life
4
Operating
Temperature
5
See table on page 758
PCB model: –55 to +70°C (no freezing)
Blade model: –55 to +60°C (no freezing)
5 to 85% RH (no condensation)
Approx. 35g
Circuit Breakers
Operating Humidity
Weight
1. Measured using 5V DC, 1A voltage drop method
2. Measured at operating frequency of 120 operations/min (failure rate level P, reference value)
3. Measured at the rated voltage (at 20°C), excluding contact bouncing;
Release time of AC relays with RC:
25 ms maximum
Release time of DC relays with diode:
40 ms maximum
4. Contact Load and Electrical Life (at ambient temperature 20°C)
5. Measured at the rated voltage.
756
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Relays & Sockets
Accessories
Description
Aluminum
DIN Rail
(1 meter length)
Appearance
Use with
All DIN rail sockets
Part No.
BNDN1000
Remarks
RU Series
Switches & Pilot Lights
IDEC offers a low-profile DIN rail (BNDN1000). The BNDN1000 is de-
signed 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).
DIN Rail End
Stop
Replacement
Hold-Down
Spring Anchor
DIN rail
BNL5
9.1 mm wide.
Horseshoe clip for DIN rail
sockets
Y778-011
For use on DIN rail mount socket when using pullover wire hold down
spring. 2 pieces included with each socket.
Display Lights
Coil Ratings
Rated Voltage (V)
Coil
Voltage
Code
A24
A110
A220
D6
D12
D24
D48
D110
Rated Current (mA)
±15% (at 20°C)
50 Hz
49.3
8.4-10.0
4.2-5.0
155
80
44.7
18
8.9
60 Hz
42.5
7.1-8.2
3.6-4.2
Coil Resistance (Ω)
±10% (at 20°C)
164
4,550
18,230
40
160
605
2,560
12,100
110%
80% maximum
10% minimum
110%
80% maximum
30% minimum
Operating Characteristics (values at 20°C)
Maximum Continuous
Applied Voltage
Pickup Voltage
Dropout Voltage
24
AC
(50/60 Hz)
110-120
220-240
6
12
DC
24
48
110
Relays & Sockets
1. The rated current includes the current of the LED indicator.
Surge Suppressor Ratings
Model
AC Coil
DC Coil
With RC
With Diode
RC series circuit
R: 20 kΩ, C: 0.033 μF
Diode reverse voltage: 1000V
Diode forward current: 1A
Ratings
UL and c-UL Ratings
Voltage
250V AC
30V DC
Resistive
RU2
10A
10A
RU4
—
6A
RU42
3A
3A
General Use
RU2
—
—
RU4
6A
—
RU42
—
—
Horse Power Rating
RU2
—
—
RU4
1/10HP
—
RU42
—
—
Timers
Contact Ratings
Maximum Contact Capacity
Contact
DPDT
4PDT
4PDT
bifurcated
Continuous
Current
10A
6A
3A
Allowable Contact Power
Resistive Load
2500VA AC
300W DC
1500VA AC
180W DC
750VA AC
90W DC
Inductive Load
1250VA AC
150W DC
600VA AC
90W DC
200VA AC
45W DC
Voltage
(V)
250 AC
30 DC
250 AC
30 DC
250 AC
30 DC
Rated Load
Res. Load
10A
10A
3A
3A
3A
3A
Ind. Load
5A
5A
0.8A
1.5A
0.8A
CSA Ratings
Voltage
250V AC
30V DC
Resistive
RU42
3A
3A
TÜV Ratings
Voltage
250V AC
30V DC
Resistive
RU2
10A
10A
RU4 RU42 RU2
6A
6A
3A
3A
5A
5A
Inductive
RU4
0.8A
1.5A
RU42
0.8A
1.5A
Terminal Blocks
Circuit Breakers
1.5A
1. On 4PDT relays, the maximum allowable total current of neighboring two poles is 6A. At the rated
load, make sure that the total current of neighboring two poles does not exceed 6A (3A + 3A = 6A).
2. Inductive load for the rated load — cos ø = 0.3, L/R = 7 ms
USA: 800-262-IDEC
Canada: 888-317-IDEC
757
RU Series
Socket Specifications
Switches & Pilot Lights
Sockets
SU2S-11L
SU4S-11L
DIN Rail Mount
Sockets
SM2S-05
SM2S-05C
SY4S-05
SY4S-05C
Through Panel
Mount Socket
SY4S-51
SY4S-61
SY4S-62
Terminal
Spring clamp terminals
Spring clamp terminals
M3 screw with captive wire clamp
M3 screw with captive wire clamp, fingersafe
M3 screw with captive wire clamp
M3 screw with captive wire clamp, fingersafe
Solder
PCB mount
PCB mount
Electrical Rating
250V/10A
250V/6A (using RU4), 10A (using RU2)
300V, 10A
300V, 10A
300V, 7A (using RU4), 10A (using RU2)
300V, 7A (using RU4), 10A (using RU2)
300V, 7A
300V, 7A
250V, 7A
Wire Size
24-16 AWG
24-16 AWG
Relays & Sockets
Torque
—
—
5.5 - 9in•lbs
5.5 - 9in•lbs
5.5 - 9in•lbs
5.5 - 9in•lbs
—
—
—
Maximum up to 2–#14AWG
Maximum up to 2–#14AWG
Maximum up to 2–#14AWG
Maximum up to 2–#14AWG
—
—
—
Display Lights
PCB Mount Socket
Electrical Life Curves
RU2 (Resistive Load)
250V AC
30V DC
110V DC
1000
RU4 (Resistive Load)
250V AC
30V DC
110V DC
RU42 (Resistive Load)
250V AC
30V DC
110V DC
(× 10,000 operations)
(× 10,000 operations)
100
Relays & Sockets
100
10
(× 10,000 operations)
0.02
0.1
0.5 1
3
6
100
10
10
1
1
0.1
0.5 1
5
10
1
0.02
0.1
0.5 1
3
6
Load Current (A)
Load Current (A)
Load Current (A)
RU2 (Inductive Load)
250V AC/30V DC
110V DC
RU4 (Inductive Load)
250V AC
30V DC
110V DC
RU42 (Inductive Load)
250V AC
30V DC
110V DC
Timers
1000
(× 10,000 operations)
(× 10,000 operations)
100
(× 10,000 operations)
AC: cos ø = 0.3
DC: L/R = 7 ms
100
100
10
10
AC: cos ø = 0.3
DC: L/R = 7 ms
1
10
AC: cos ø = 0.3
DC: L/R = 7 ms
Terminal Blocks
1
1
0.1
0.5 1
5
10
0.02
0.1
0.5
0.02
0.1
0.5
Load Current (A)
Load Current (A)
Load Current (A)
Maximum Switching Current
RU2
10
5
RU4
AC resistive
AC inductive
(cos ø = 0.3)
6
3
RU42 (Bifurcated)
AC resistive
AC inductive
(cos ø = 0.3)
6
3
AC resistive
AC inductive
(cos ø = 0.3)
Circuit Breakers
Load Current (A)
Load Current (A)
1
DC resistive
Load Current (A)
1
1
DC resistive
DC inductive
L/R = 7 ms
DC resistive
DC inductive
L/R = 7 ms
0.1
DC inductive
L/R = 7 ms
0.1
0.1
10
30
100 250 500
10
30
100 250 500
10
30
100
250 500
Load Voltage (V)
Load Voltage (V)
Load Voltage (V)
758
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