Welcome to Potter Brumfield Products

circuit breakers

our extensive p&b circuit breaker product line includes thermal and magnetic types. termed secondary breakers by ul, they protect equipment rather than branch circuits in buildings. one- to four-pole models are available in current ratings from milliamps through 50 amps.

thermal circuit breakers    due to their relatively low cost, thermal breakers are applied more broadly than magnetic breakers. thermal applications include: magnetic circuit breakers applications that might require the precision of a magnetic breaker include: medical/dental diagnostic equipment automation robotics welders elevators m9/w9 series standard size magnetic circuit breakers (approx. 0.75 x 2.5 x 2.1d [19 x 63.5 x 53.3d] per pole) find a catalog m6/w6 series compact size magnetic circuit breakers (approx. 0.75 x 2.0 x 1.64d [19 x 50.8 x 41.7d] per pole) find a catalog

line conditioning treadmills hvac (transformer) appliance (range hood) cable tv converters spa controls uninterruptible power supplies rvs (hvac system) appliance (range) test and measurement pool heaters bowling pin spotters copy machines vending machines general aviation aircraft medical equipment

circuit breakers
p&b circuit breakers include both thermal and magnetic types in ratings from milliamps to 50 amps. the information below may help users to quickly differentiate these two types of p&b circuit protectors:
thermal circuit breakers typically less expensive. trip point varies with the ambient temperature. one- and two-pole models only. magnetic circuit breakers typically more expensive. temperature stable over a wide range. available with different time delays before tripping. one- through four-pole models.	our e-catalog comes complete with a step-search function that will help you to select an appropriate circuit breaker for your application.
PRODUCT product description series price thermal circuit breaker rocker actuator w33 contact us thermal circuit breaker push/pull actuator w23 contact us thermal circuit breaker toggle actuator w31 contact us thermal circuit breaker compact, rocker actuator w51 contact us thermal circuit breaker low-cost, push to reset w54 contact us thermal circuit breaker compact, push to reset w57 contact us thermal circuit breaker push to reset/switchable fuseholder-type w28 contact us thermal circuit breaker push to reset only w58 contact us circuit breakers magnetic hydraulic w6/w9 contact us