In stock orders ship the same day until 4 p.m. EST

Over $1 million in stock for same day shipping!

Text us an RFQ to 484.425.0652

Call us today!

877.334.7893

Siemens  |  SKU: Siemens-5SY42

5SY42

$55.10 $203.00
Shipping calculated at checkout.

Siemens 5SY42 two pole Supplementary Circuit Breaker (must choose AMP and Trip Curve below) rated for 480 volt max and with tripping characteristic B, C or D type that mounts on standard 35mm DIN rail

Catalog Page / Specifications

Ships same day up until 4 p.m. EST

5-7 days for item to ship for standard delivery

Can be shipped direct from manufacturer for next day delivery if out of stock at IMC-DIRECT warehouse

Siemesn 5SY42 MCB supplementary protectors are equipped with a delayed overload/ time-dependent thermal release (thermal bimetal) for low overcurrents and with an instantaneous electromagnetic release for high overload and short-circuit currents. The special contact materials used virtually guarantee a long service life and offer a high degree of protection against contact welding.

siemens logo

5SY42 is backordered and will ship as soon as it is back in stock.


Delivery and Shipping

We ship the same day on all in stock orders that are placed prior to 4 p.m. EST, Monday through Friday. We offer Flat Rate shipping ($9.00 for UPS Ground) and expedited shipping can be selected at checkout.

Siemens' UL 1077 5SY42 Supplementary Protectors are designed to provide additional protection along with a branch circuit protection device. Since these 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 be 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.