Siemens Supplementary Protector 3 Ampere 2 Pole Breaker (5SY42037)
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- UL 1077 Rated
- 2 Pole Breaker
- 3 Ampere Maximum
- Tripping Characteristic C
- DIN Rail Mounted
- Siemens' UL 1077 Supplementary Protectors are designed to provide additional protection along with a branch circuit protection device. Since our Supplementary protectors are made to trip faster than a standard UL 489 Circuit Breaker they are able to provide additional protection for more sensitive devices inside the panel. Supplementary protectors can used in a number of industrial applications such as to provide selectivity for multiple motor control circuits on the secondary side of a control transformer or power supply by allowing the user to quickly find the problem circuit should a fault occur without having to shut down all of the other control circuits. Supplementary protectors may also be used as a local disconnecting means inside the panel when a branch circuit protection device is already present. Supplementary protectors are equipped with a delayed overload/time-dependent thermal release (thermal bimetal) for low over currents and with an instantaneous electromagnetic releas
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