Super B

SB LIR250 Zoom


500+ Amps, 12-900VDC protective relay.

The LIR250 is designed for high voltage DC, hermetically sealed package for operation in electric vehicles and other harsh environments.

  • Designed to be the smallest, lightest weight, lowest cost sealed contactor in the industry with its current rating (500+A carry, 2000A interrupt at 320VDC).
  • Built-in coil economizer – only 1.7W hold power @ 12VDC and it limits back EMF to 0V. Models requiring extenal economizer also available.
  • Optional auxiliary contact for easy monitoring of power contact position.
  • Hermetically sealed – intrinsically safe, operates in explosive/harsh environments with no oxidation or contamination of coils or contacts, including long periods of non- operation.
  • Versatile coil/power connections.
  • CE marked for EC applications.
  • AIAG QS9000 designed, built and approved

Technical specifications

Performance Data
Rated Operating Voltage 12 - 900 VDC
Continuous (Carry) Current 500A @ 85°C
Current rating 2000A interrupt at 320VDC
Coil Operating Data
Voltage (will operate) 9-36VDC
Voltage (Max.) 36VDC
Pickup (close) Voltage Max. 9VDC
Hold Voltage (Min.) 7.5VDC
Dropout (open) Voltage (Min.) 6VDC
Inrush Current (Max.) 3.8A
Holding Current (Avg.) 0.16A@12V, 0.1A@24V
Inrush Time (Max.) 130ms
Weight 420gr