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Siemens 3RH2911-1HA12-ZX95 — Contactors

Siemens 3RH2911-1HA12-ZX95 SIRIUS Auxiliary Switch

MPN3RH2911-1HA12-ZX95
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Siemens SIRIUS 3RH2911-1HA12-ZX95 auxiliary switch, 1 NO + 0 NC, snap-on front mount for contactor sizes S00-S3, rated 10 A at 24 V, IP20 front.

Siemens 3RH2911-1HA12-ZX95 datasheet (PDF)
StockContact for availability
Lead time3-5 Days wk
MOQ1 pcs
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026
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Specifications

Identification

3RH2911-1HA12-ZX95 — Identification
ParameterValue
Contactor frame sizeS00, S0, S2, S3

Ratings & Performance

3RH2911-1HA12-ZX95 — Ratings & Performance
ParameterValue
Rated value @ 24 V10 A
Rated value @ 60 V4.7 A
Rated value @ 110 V3 A
Rated value @ 220 V1.2 A

Contacts & Poles

3RH2911-1HA12-ZX95 — Contacts & Poles
ParameterValue
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)

Connection & Mounting

3RH2911-1HA12-ZX95 — Connection & Mounting
ParameterValue
Conductor cross-section, solid or stranded2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²)
Conductor cross-section, finely stranded w/ ferrule2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²)
Mounting methodsnap-on mounting

Environmental

3RH2911-1HA12-ZX95 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Storage temperature range-55 ... +80 °C

Mechanical

3RH2911-1HA12-ZX95 — Mechanical
ParameterValue
Width36 mm
Height37.5 mm
Depth43.7 mm

Product details

Auxiliary switch for SIRIUS contactor relays and power contactors

The Siemens 3RH2911-1HA12-ZX95 is a SIRIUS auxiliary switch designed for snapping onto the front of contactor relays and power contactors in sizes S00, S0, S2, and S3.

Rated currents and contact reliability across voltage levels

The switch also carries a mirror contact feature per IEC 60947-4-1 when used with the 3RT2 contactor, enabling fail-safe feedback in safety circuits.

Mounting, wiring, and environmental limits

Dimensions are 43.7 mm deep, 36 mm wide, and 37.5 mm high, fitting within the contactor envelope without increasing panel depth.

Frequently asked questions

What contactor sizes does this auxiliary switch fit?

It snaps onto the front of SIRIUS contactor sizes S00, S0, S2, and S3, covering both contactor relays and power contactors.

MPN
3RH2911-1HA12-ZX95