RU Series
Relays
RU Series — General Purpose Relays
Key features of the RU series include:
• Non-polarized LED indicator standard
• Solder-free construction (spot welded, no solder points, lead-free)
• No internal wires
• Mechanical flag indicator standard
• Manual latching lever with color coding for AC or DC coil
• Available without latching lever (or with momentary check button)
• Snap-on marking plate standard
• Cadmium-free contacts - RoHS compliant
• Color coded coils for visual distinction
• Contact rating 6A: 4PDT
10A: DPDT
RU2
RU4
E
UL Recognized
File No. E66043, Vol 8, sec. 1
AgSnOIn (silver tin oxide
indium)
AuAg/Ag (gold-silver alloy
on silver)
Contact Material
Vol 8, sec. 2
50 mΩ maximum
Contact Resistance
Minimum
Applicable Load
24VDC, 5mA
(reference value)
1V DC, 1mA (standard)
1V DC, 0.1mA (bifurcated)
B020813332451
20 msec maximum
Operating Time
Release Time
Maximum
Continuous Applied
Voltage
(AC/DC) at 20°C
20 msec maximum
110%
CSA Certified
File No. LR35144-135844
Minimum
Operating Voltage
(AC/DC) at 20°C
Drop-Out Voltage
(AC) at 20°C
80%
30%
Drop-Out Voltage
(DC) at 20°C
Power Consumption
10%
Ordering Information
1.1-1.4VA (AC); 0.9-1.0W (DC)
Between contact and coil:
Between contact and coil:
2,500VAC, 1 minute
Between poles:
2,500VAC, 1 minute
Between poles:
Consult factory for other voltages.
2,500VAC, 1 minute
Between contacts of the
same pole:
2,000VAC, 1 minute
Between contacts of the
same pole:
Dielectric Strength
Basic Part No.
Coil Voltage:
RU 4
S – ( ) – D12
1,000VAC, 1 minute
1,000VAC, 1 minute
1,800 operations/hr
Frequency Response
Vibration Resistance
# of Contacts
2 = DPDT
4 = 4PDT
42 = 4PDT bifurcated
contacts
Operating extremes:
10 to 55Hz,
Amplitude 1.0 mm p-p
Damage limits: 10 to 55Hz,
Amplitude 1.0 mm p-p
Coil Voltage Code**
D12 = 12V DC
D24 = 24V DC
D110 = 110V DC
A24 = 24V AC
Operating extremes:
2
150 m/s (15G)
Shock Resistance
Life Expectancy
Damage limits:
Option*
(Blank) = with latching check
button
C = without check button
M = momentary check button
D = surge suppression diode (DC coils only)
A110 = 110-120V AC
A220 = 220-240V AC
2
1,000 m/s (100G)
Mechanical:
AC: 20,000,000 operations
minimum
DC: 30,000,000 operations
minimum
Electrical:
see electrical life curve
1. *All come with bi-polar LED, mechanical flag indica-
tor, marking plate.
2. **Contact IDEC for other voltages.
IP40
-55 to +70°C (no freezing)
35g
Degree of Protection
Operating Temperature
Weight
E-8
www.idec.com
USA: (800) 262-IDEC or (408) 747-0550, Canada: (888) 317-IDEC