AUXILIARY SWITCH

AUXILIARY SWITCH

FEATURES

Control devices for the circuit breaker play important roles for protecting the power system. It is an auxiliary switch that functions interlocking with the main circuit switching mechanism of the circuit breaker or the insulated switch, therefore it is required to have high reliability.

Rotary type auxiliary switch

  • Cam-operated type

    B, BM, BH type auxiliary switch

    Applicable for shutting down relatively large current in frequently switching uses.

    BMZ and CMZ type auxiliary switches

    High-reliable auxiliary switches that have higher breaking capacity and higher impact resistance (prevention of chattering) than the conventional ones.
    All the wiring terminals are located on one side, for making wiring work easier.

  • Drum type

    M type auxiliary switch

    Compactly designed and yet relatively high in breaking performance; therefore most suitable for use in downsizing equipment.

Push-type auxiliary switch

  • UX-33A

    Suitable for a high-voltage electromagnetic contactor or a vacuum circuit breakers. The contact is designed to incorporate a magnet so that the breaking capacity of the contact can be increased.

Item Rating Performance Standard operating condition
Rated insulation voltage (Ui) Rated current-carrying capacity (Ith) Terminal screw Electrical life Mechanical life Contact resistance Withstand voltage Ambient temperature Altitude
B-AUS 600V 20A M4×9 500,000 (110V DC 1.5A L/R=40ms) 1,000,000 50mΩ max. 2,500V for 1 min. -20 to 60℃ 2,000m max.
BM-AUS 600V 20A M4×9 500,000 (110V DC 1.5A L/R=40ms) 1,000,000 50mΩ max. 2,500V for 1 min. -20 to 60℃ 2,000m max.
BMZ 250V 20A M4×9 50,000 (110V DC 5A L/R=40ms) 500,000 50mΩ max. 2,000V for 1 min. -20 to 60℃ 2,000m max.
CMZ 250V 20A M4×9 30,000 (110V DC 5A L/R=40ms) 500,000 50mΩ max. 2,000V for 1 min. -20 to 60℃ 2,000m max.
S-AUS 250V 10A M3.5×7/
PC board
30,000 (110V DC 5A L/R=40ms) 30,000 50mΩ max. 2,000V for 1 min. -20 to 60℃ 1,000m max.
M-AUS 250V 8A M4×8/
faston#250
10,000 (110V DC 2A L/R=40ms) 50,000 50mΩ max. 2,500V for 1 min. -20 to 60℃ 2,000m max.
UX-33A 250V 10A M4×8 250,000 (110V DC 3A L/R=40ms) 1,000,000 50mΩ max. 2,500V for 1 min. -20 to 60℃ 2,000m max.
product document data type volume of data date of update download
AUXILIARY SWITCH Catalog PDF 5404.9KB - download

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