Product category:
Machine Safety Monitoring and Control
News Release from: Tyco Electronics UK | Subject: W54 and W57
Edited by the Engineeringtalk Editorial
Team on 05 November 2003
Circuit breakers provide economical
thermal relief
Based on a new economical design, the W54 and W57 series thermal push-to-reset-only thermal circuit breakers provide a cost-effective solution rated from 5 to 40 and 4 to 20A, respectively.
Based on a new economical design, the W54 and W57 series thermal push-to-reset-only thermal circuit breakers from Tyco Electronics provide a cost-effective solution rated from 5 to 40 and 4 to 20A, respectively UL and CSA approved, the devices are recognised as supplementary protectors as per UL1077 standards
This article was originally published on Engineeringtalk on 8 Apr 2002 at 8.00am (UK)
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The circuit breakers cannot be manually tripped and feature an extended pushbutton for visual trip indication.
Numerous mounting and termination options are catered for.
Specifications include a 1000A interrupt capacity in accordance with UL1077, resettable overload capacity of ten times rated current and a reset time of 60s.
Operating temperature is 0 to 60C.
W54 and W57 circuit breakers will continuously carry 100% of rated load.
The devices may trip between 101 and 134%, but are guaranteed to trip at 135% of rating within 1h at 25C.
For the W54, at 200% overload, trip time is 5 to 40s, and at 600% overload it is 0.4 to 2.2s.
Its typical resistance at 5A current rating at 25C is 50mohm, whereas for a device rated at 40A it is 6mohm.
Termination options are 6.35mm quick connects or size 8 to 32 screws.
For the W57, at 200% overload, trip time is 4 to 40s, and at 600% overload it is 0.3 to 1.8s.
Typical resistance at 4A current rating at 25C is 62mohm, whereas for a device rated at 20A it is 12mohm.
Termination is via 6.35mm quick connects. Request a free brochure from Tyco Electronics UK ...
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