High performance from thermal circuit breaker
An
E-T-A Circuit Breakers product story
Edited by the Engineeringtalk editorial team
Jul 6, 2004
A new single-pole aircraft-style thermal circuit breaker features temperature compensation and a trip-free mechanism.
A new single-pole aircraft-style thermal circuit breaker features temperature compensation and a trip-free mechanism.
Available in versions handling up to 50A, with or without an auxiliary contact, the high-performance circuit breaker is suitable for harsh operating conditions in a wide range of applications including marine, land and air transport, and general industrial uses.
The E-T-A 4140 high performance thermal circuit breaker is a temperature-compensated, single pole aircraft style circuit breaker, with full ASNE and NSA approvals for all aircraft applications.
The threadneck, panel-mounted design features a push/pull, on/off manual actuation.
An indicator band on the neck clearly shows the tripped/off position.
The type 4140 has a trip-free mechanism that operates at very precise conditions of overcurrent.
This prevents the destruction of wiring and components in the protected circuit and minimises the smoke and fire risks that overheating can cause.
A high tolerance to sudden current surges is in-built, reducing the risk of nuisance operation, and enabling an optimum match of cable size to circuit breaker rating with weight and cost saving benefits.
By resetting the circuit breaker button, the circuit can be immediately repowered if desired.
The E-T-A 4140 is available in a wide range of current ratings from 20 to 50A up to 115V 400Hz.
It is temperature compensated in the range from -55 to +90C, while qualified to operate in ambient temperatures up to +125C.
An optional auxiliary contact provides remote status signalling up to 0.5A 28V DC.
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Contact E-T-A Circuit Breakers
Tel +44 1296 420336
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Electronic active current limitation responds much faster to overload or short circuit conditions than switch-mode power supplies.
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