Cam contactors C155/C156/C157

Multi-pole cam contactors for voltages up to 750 V


C155 to C157 Series cam contactors are rugged switchgear for switching AC and DC voltages that has stood the test of time. This most variable contactor series is designed for carrying out the various switching tasks as required in industrial and railway applications. Main contacts: Available are 2, 3 and 4 pole contactor versions fitted with S307 Series cam switch elements. The double-break main contacts can be configured as SPST NC or NO and as a combination of both. To extinguish the arc when switching higher loads, there is the option of arc chambers, and for voltages ranging from 400 to 1,000 V DC an arc chute with magnetic blow­out is offered. Features: -Rugged design -Various combination of switching elements (4 main / 4 auxiliary max.) -Easy to replace switching elements -Double-break contacts -Extended coil tolerance -Optional electronic economy circuit -Parallel connection: 800 A max.

  • industrial applications
  • railway applications

Product features

Type of voltage DC, AC
Contact configuration 2 x /3 x /4 x NO and/or NC
Nominal voltage 450 V
Rated insulation voltage Ui 630 V
Conv. thermal current Ith 250, 300 A
Making capacity, resistive T = 0 ms 900, 1,400 A
Contact material main contacts AgSnO2
Aux. contact 4 cam switch elements max.
Coil tolerance % Us -30% ... +25%

Additional product literature

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