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Siemens 3RH1911-1FA11-ZW96 — Contactors

Siemens 3RH1911-1FA11-ZW96 SIRIUS Auxiliary Switch, 1 N/O, S

MPN3RH1911-1FA11-ZW96

Siemens SIRIUS auxiliary switch, 1 N/O, for S00 contactor relays and power contactors, snap-on front mounting, 6 A at 24 V AC, 10 A AC-12, IP20 front.

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

Specifications

3RH1911-1FA11-ZW96 — Identification
ParameterValue
Contactor frame sizeS00
3RH1911-1FA11-ZW96 — 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
3RH1911-1FA11-ZW96 — Contacts & Poles
ParameterValue
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RH1911-1FA11-ZW96 — 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
3RH1911-1FA11-ZW96 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Storage temperature range-55 ... +80 °C
3RH1911-1FA11-ZW96 — Mechanical
ParameterValue
Width36.5 mm
Height37.5 mm
Depth41.5 mm

Product details

It snaps onto the front of the contactor, adding one normally-open instantaneous auxiliary contact without increasing panel depth beyond the 41.5 mm block depth. Rated for AC-15 pilot-duty loads at 690 V (1 A) and AC-12 general-use up to 10 A, it covers most signal-feedback and interlocking needs in a motor-control center.

Snap-on mounting to the front of any S00 SIRIUS contactor or contactor relay. Accepts 2 x (0.5…1.5 mm²) solid/stranded or 2 x (0.75…2.5 mm²) with ferrule. AWG equivalents: 2 x (20…16) and 2 x (18…14). Storage temperature range -55 to +80 °C; operating -25 to +60 °C.

Frequently asked questions

What is the closest second-source to 3RH1911-1FA11-ZW96?

The 3RH2122-1BA40 is a functional alternative but carries two N/O and two N/C contacts instead of the single N/O on this block. It snaps onto the same S00 contactor front and shares the same 36.5 mm width.

Will 3RH1911-1FA11-ZW96 drop into a panel specified around 3RH2122-1BA40 without rewiring?

Yes, both blocks mount on the same S00 contactor front and share the same 36.5 mm width and snap-on footprint. The terminal layout differs (one contact vs. four), so wiring changes are needed if the circuit requires more than one N/O.

MPN
3RH1911-1FA11-ZW96