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Siemens 3RH1951-1TA11 — Contactors

Siemens 3RH1951-1TA11 Auxiliary Contact Block, 1NO+1NC, Scre

MPN3RH1951-1TA11
Active

Siemens SIRIUS 3RH1951-1TA11 auxiliary contact block, 1 NO + 1 NC, side-mounted for 3RT135/136/137 contactors, screw terminal.

Siemens 3RH1951-1TA11 datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

3RH1951-1TA11 — Specifications
ParameterValue
Group codeR711
Product group5805
Product classA: Standard product which is a stock item could be returned within the returns guidelines/period.
SeriesSIRIUS 3RT.3 contactors, 4-pole, up to 525 A
Export control regulationsAL : N / ECCN : N
Compliance with the substance restrictions according to RoHS directiveSince: 27-03-17

Product details

The Siemens 3RH1951-1TA11 is a side-mounted auxiliary contact block for the SIRIUS 3RT.3 contactor family, specifically the 3RT135, 3RT136, and 3RT137 frames rated up to 525 A. It provides one normally-open and one normally-closed contact pair via screw terminals.

Integration Note

Mounts on the side of the contactor, not the front. The screw terminals accept standard wire sizes for 24 VDC or 120 VAC control circuits typical in motor starter assemblies. The 1 NO + 1 NC configuration covers a feedback signal and a permissive interlock in one block.

Frequently asked questions

What contactors does this block fit?

It side-mounts on Siemens SIRIUS 3RT135, 3RT136, and 3RT137 contactors, which are 4-pole frames within the 3RT.3 family rated up to 525 A.

What compliance documentation is available?

RoHS compliance is confirmed effective 27 March 2017. REACH Article 33 candidate-list information is available per the manufacturer's disclosure. Export control is AL: N / ECCN: N.

MPN
3RH1951-1TA11