Masterpact Circuit Breaker Manual

The masterpact nt and nw universal power circuit breakers offer a family of circuit protection products meeting the most common world standards ansi ul and iec.

Masterpact circuit breaker manual.

Using masterpact the circuit breaker signals a fault trip by. Operating safety is ensured by dusting and general cleaning proper greasing and regular opening and closing of the circuit breaker. Locally if the circuit breaker is not equipped with the automatic reset option reset it manually. For complete information on masterpact handling and mounting see the installation manual s.

Masterpacttm circuit breaker is operated via a stored energy mechanism which can be manually or motor charged. This document is intended to provide part numbers for a complete circuit breaker with cradle and required accessories as well as field installable accessory kits. Before mounting the circuit breaker make sure it matches the chassis. E51217a push the circuit breaker into the chassis taking care not to push on the control unit.

The mechanism is charged either manually or electrically. Tutorial for performing a manual charge of the closing spring within masterpact nw and masterpact nt circuit breakers by pumping the charging handle several. 0 c 0 cycle is possible without recharging. Refer to the masterpact nt nw universal power circuit breaker catalog 0613ct0001 for product descriptions.

Masterpact nt and nw maintenance guide device and chassis mechanisms mechanical operation of the circuit breaker may be hindered by dust knocks aggressive atmospheres no greasing or excessive greasing. The masterpact nw low voltage power circuit breaker1 and insulated case circuit breaker are designed to mount in a drawout cradle using rear mounted plug on pressure connections to provide electrical connection to the cradle. The basic design platform for each is common. The mismatch protection ensures that a circuit breaker is installed only in a chassis with compatible characteristics.

Common auxiliaries from 800 a to 6 300 a. Closing and opening operations can be initiated either from the local pushbuttons on the circuit breaker front face or by remote control. The final result is ul ansi and iec circuit breakers with. Masterpact circuit breakers are operated via a stored energy mechanism for instantaneous opening and closing.

Resetting after a fault trip remotely. Closing and opening operations can be initiated either from the local pushbuttons on the circuit breaker front face or by remote control. B a mechanical indicator on the front b one or two sde fault trip indication contacts sde2 is optional.