What is the advantage of the 4-pole 2NO/2NC switch in Eaton E2J moulded case circuit breaker accessory trip units?

The 4-pole switch allows for increased reliability, as the switch can still function even if one of the contacts becomes damaged.

EATON Molded Case Circuit Breaker Trip Units, E2J Frame

Eaton E2J moulded case circuit breaker accessory trip units are used in MCCBs for controlled protection agains short circuits and current overloads.

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Eaton E2J moulded case circuit breaker accessory trip units feature E2J frames for structural rigidity and operational stability.
They have a maximum voltage rating of 1000 / 577V.
Selected models have a four-pole auxiliary switch for enhanced control of current flowing in the breaker.

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