BOM / RFQ

Siemens SIRIUS 3RT7926-1BD00 Surge Suppressor, Varistor, S0

MPN3RT7926-1BD00

Siemens SIRIUS, surge suppressor VARISTOR, for plugging onto contactors 3RT7 S0, 12 mm depth, 30 mm width, 19 mm height, clip-on, AC/DC control supply voltage.

Add to RFQ

Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

3RT7926-1BD00 — Identification
Parameter	Value
Contactor frame size	S0

3RT7926-1BD00 — Control & Coil
Parameter	Value
Control supply voltage type	AC/DC
Rated value @ 50 Hz	127 ... 240 V

3RT7926-1BD00 — Connection & Mounting
Parameter	Value
Mounting method	clip-on

3RT7926-1BD00 — Environmental
Parameter	Value
Operating temperature range	-10 ... +55 °C
Storage temperature range	-25 ... +70 °C

3RT7926-1BD00 — Mechanical
Parameter	Value
Width	30 mm
Height	19 mm
Depth	12 mm

Product details

The Siemens SIRIUS 3RT7926-1BD00 is a varistor-type surge suppressor designed to plug directly onto S0-size contactors in the 3RT7 family. It clips onto the contactor coil terminals, suppressing voltage spikes that occur when the coil de-energizes — protecting nearby electronics and extending contactor life. The 12 mm depth and 30 mm width keep the assembly within the S0 footprint, so it adds no overhang in a DIN-rail panel.

Voltage compatibility and mounting

Rated for AC control supplies at 50/60 Hz from 127 to 240 V, and DC supplies from 150 to 250 V. Clip-on fastening snaps onto contactor coil terminals. Mounting position is unrestricted.