Circuit breakers exceed safety standards
A
Moeller Electric product story
Edited by the Engineeringtalk editorial team
Feb 20, 2002
Moeller Electric's latest NZM7 circuit breakers incorporate a wide range of power ratings from 25 to 250A, easy installation, and safety testing way beyond the standards set by IEC60947 and EN60947.
Moeller Electric's latest generation of NZM7 circuit breakers incorporate a wide range of power ratings from 25 to 250A, easy installation, and safety testing way beyond the standards set by IEC60947 and EN60947, giving the units industry-leading functionality.
The NZM7 features a two-part box terminal, allowing the top section of the terminal to be removed and the cable to slide into place.
This eliminates the need to bend large cables into place.
Alternatively, there is the option of easy to fit rear connection terminals or a bolt action terminal.
For units rated up to 160A cables up to 120mm2 can be connected, while for 200 and 250A rated versions allow cables up to 150mm2.
An additional control circuit terminal is available, simplifying the connection of control circuits, guaranteeing a high quality connection and removing the danger of 'hot spots', usually associated with taking small cables into large terminals.
With a positive toggle action and an optional rotary drive, the engineer can select the method of operation most appropriate for the application.
A kit is also available which allows the handle to be mounted on the sidewall of the enclosure.
All rotary options can be fitted with either black or IEC/EN 60 204-1 compliant red and yellow handles, making the NZM7 ideal for use as a main switch.
A full range of auxiliary contacts can also be fitted, covering standard, general trip indicating and differential trip indicating auxiliaries.
The differential trip contacts are ideal for monitoring the status of the breaker and investigating the reason for the trip.
Additionally, the range is also supplemented by both shunt and undervoltage releases.
The undervoltages are available with built-in early-make auxiliary contacts.
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