Skip to main content
Siemens 3RH1911-1FA02-ZW97 — Contactors

Siemens 3RH1911-1FA02-ZW97 Auxiliary Switch Block, 2 NC, 10

MPN3RH1911-1FA02-ZW97

Siemens SIRIUS auxiliary switch block, 3RH1911-1FA02-ZW97, 2 NC contacts per EN 50005, screw-type terminals, size S00, snap-on mounting, 10 A maximum, IP20 front.

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

Specifications

3RH1911-1FA02-ZW97 — 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
3RH1911-1FA02-ZW97 — Contacts & Poles
ParameterValue
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RH1911-1FA02-ZW97 — Connection & Mounting
ParameterValue
Mounting methodsnap-on mounting
3RH1911-1FA02-ZW97 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Storage temperature range-55 ... +80 °C
3RH1911-1FA02-ZW97 — Mechanical
ParameterValue
Width36.5 mm
Height37.5 mm
Depth41.5 mm

Product details

It mounts via snap-on fastening onto a DIN rail, occupying a width of 36.5 mm, depth of 41.5 mm, and height of 37.5 mm. The screw-type terminals accept 2x (0.5 to 1.5 mm²) and 2x (0.75 to 2.5 mm²) conductors with core-end processing, or 2x (20 to 16) and 2x (18 to 14) AWG for auxiliary circuits.

Rated operational currents — what the voltages mean

The maximum continuous current is 10 A, but the actual rating depends on the circuit voltage and duty. At 24 V AC/DC the switch block carries 6 A; at 125 V it carries 6 A; at 230 V it carries 6 A; at 400 V it carries 3 A. For DC switching at higher voltages, the ratings drop significantly: 2 A at 60 V, 1 A at 110 V, and 0.3 A at 220 V — reflecting the arc-extinction limits of the 2 NC contact set. The AC-15 rated operational current at 690 V is 1 A, which is the figure to use when switching inductive loads (solenoids, contactor coils) at that voltage level.

Lifecycle status and sourcing reality

This order code is a phased-out product per the manufacturer's listing. The official successor is the SIRIUS 3RH2 series. The 3RH2 successor shares the same S00 frame size, screw-terminal format, and snap-on DIN-rail mounting, but verify the contact configuration and terminal layout against your panel design before substituting.

Mechanical and electrical endurance

Environmental and insulation ratings

The front face carries IP20 protection (finger-safe), while the overall unit operates from -25 °C to +60 °C and can be stored from -55 °C to +80 °C. Insulation voltage is rated at 690 V AC with pollution degree 3, and surge voltage resistance is 6 kV — figures that confirm suitability for 400 V line-to-line control panels with adequate clearance and creepage.

Frequently asked questions

What is the note 'with 3RH1' on this component?

The note indicates this auxiliary switch block is designed for use with 3RH1 contactor relays and compatible S00-frame power contactors in the SIRIUS family.

MPN
3RH1911-1FA02-ZW97