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Siemens 3RH2122-1BF40-ZX95 — Contactors

Siemens 3RH2122-1BF40-ZX95 Contactor Relay, 110 VDC, Size S0

MPN3RH2122-1BF40-ZX95

Siemens SIRIUS 3RH2122-1BF40-ZX95 contactor relay, Size S00, 110 VDC coil, screw and snap-on mounting on 35 mm DIN rail, 2 instantaneous contacts, auxiliary switch extension.

Source DocumentedChannel stated on listing & quote
Condition PhotosReal unit photos / video on request
WhatsApp AnswersFast human replies for machine-down parts
Worldwide DispatchDHL/FedEx — transit quoted per order
Independent China distributor & sourcing agent· Listing updated Sep 2026

Specifications

3RH2122-1BF40-ZX95 — Identification
ParameterValue
Contactor frame sizeS00
3RH2122-1BF40-ZX95 — Ratings & Performance
ParameterValue
Rated operational current, AC-12, max.10 A
Rated value @ 400 V3 A
Rated value @ 500 V2 A
Rated value @ 690 V1 A
Rated value @ 230 V10 A
Rated value @ 24 V10 A
Rated value @ 60 V4.7 A
Rated value @ 110 V3 A
Rated value @ 220 V1.2 A
3RH2122-1BF40-ZX95 — Control & Coil
ParameterValue
Control supply voltage typeDC
3RH2122-1BF40-ZX95 — Contacts & Poles
ParameterValue
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RH2122-1BF40-ZX95 — Connection & Mounting
ParameterValue
Conductor cross-section, solid or stranded2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²), 2x 4 mm²
Conductor cross-section, finely stranded w/ ferrule2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²)
Mounting methodscrew and snap-on mounting onto 35 mm DIN rail
3RH2122-1BF40-ZX95 — Durability
ParameterValue
Durability (operating cycles, typ.)30 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RH2122-1BF40-ZX95 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Storage temperature range-55 ... +80 °C
Installation altitude, max.2 000 m
3RH2122-1BF40-ZX95 — Mechanical
ParameterValue
Width45 mm
Height58 mm
Depth73 mm
3RH2122-1BF40-ZX95 — Specifications
ParameterValue
At AC10 000 1/h

Product details

Its primary job is switching control circuits in panels — think PLC outputs driving motor contactor coils or signaling to downstream auxiliaries.

Switching capacity — what the DC ratings mean for fit

This relay carries a set of DC-12 switching ratings that define the load it can break across different voltages. At 24 V DC it is rated for 10 A; at 110 V DC that drops to 3 A; at 220 V DC it is 1.2 A; and at 600 V DC it falls to 0.26 A. For a maintenance planner, the 24 V DC 10 A rating is the one that covers most PLC output interposing and solenoid valve circuits — that is the fast-moving spare to keep on the shelf.

The Size S00 body is 45 mm wide, 58 mm high, and 73 mm deep — fits standard panel layouts without special bracketry. Wire termination accepts 2x (0.5 to 1.5 mm²), 2x (0.75 to 2.5 mm²), or 2x 4 mm² solid or stranded.

Operates in -25 to +60 °C ambient; stores in -55 to +80 °C. Pollution degree 3 (industrial environment with conductive pollution). Relative humidity minimum 10 %. RoHS compliance date for substance prohibitance is 10/01/2009. Surge voltage resistance rated at 6 kV.

Frequently asked questions

What are the key switching ratings for 3RH2122-1BF40-ZX95?

At 24 V DC it is rated for 10 A; at 110 V DC for 3 A; at 220 V DC for 1.2 A; and at 600 V DC for 0.26 A. The arcing time is 10 to 15 ms.

How do I get pricing and availability for 3RH2122-1BF40-ZX95?

This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at the time of quote — submit an RFQ for a firm price and lead time.

What is the mounting method and panel clearance for this relay?

It mounts via screw or snap-on onto 35 mm DIN rail. Clearances needed: 10 mm upward, 10 mm forward, 10 mm downward, and 6 mm at the side. The body dimensions are 45 mm wide, 58 mm high, and 73 mm deep.

Will 3RH2122-1BF40-ZX95 drop into a panel specified for 3RH2122-1BW40?

Both are Size S00 contactor relays on the same 35 mm DIN-rail footprint, so the mechanical fit and wiring clearances are the same. The difference is the coil voltage — this unit has a 110 V DC coil, while the -1BW40 variant uses a different coil rating. Verify the control voltage before swapping.

MPN
3RH2122-1BF40-ZX95