COIL CHARACTERISTICS AT 20 °C SERIES 52040
Nominal operating voltage 28 Vdc
Maximum operating voltage 32 Vdc
Maximum pickup voltage 17 Vdc
Drop-out voltage 2 Vdc min. to 8 Vdc max.
Cut-in current 13.8 A at 28 Vdc
Holding current 300 mA at 28 Vdc

GENERAL CHARACTERISTICS
Temperature range -55°C to +85°C
Minimum operating cycles (life) at rated load 50,000 cycles
Dielectric strength at sea level 500 Vrms
Dielectric strength at altitude 25,000 m 300 Vrms
Insulation resistance at 500 Vdc 100 M W
Sinusoidal vibration 10 G / 5 to 2000 Hz
Shock 30 G / 11 ms
Maximum contact opening time under vibration and shock 10 µs
Maximum operate time at 28 Vdc 15 ms
Maximum release time at 28 Vdc 8 ms
Main contact voltage drop
- Initial value 120 mV
- After endurance test 180 mV
Auxiliary contact voltage drop
- Initial value 60 mV
- After endurance test 120 mV
Auxiliary contacts
- Contact resistance (low level) 1 W
- I minimum 2 mA
Assembly torque
- Main contact terminals 14.7 Nm
- Coil and auxiliary contact terminals 1.2 Nm
Date of issue: 6/06 - 150 - Page 2 of 4