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Siemens 3RT6025-1BF40 — Contactors

Siemens 3RT6025-1BF40 SIRIUS Power Contactor, 110 V Coil, Si

MPN3RT6025-1BF40

Siemens SIRIUS power contactor, 3RT6025-1BF40, Size S0, 110 V coil, screw-type terminals, AC-3 rated to 690 V, current lifecycle stage.

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

3RT6025-1BF40 — Identification
ParameterValue
Contactor frame sizeS0
3RT6025-1BF40 — Ratings & Performance
ParameterValue
Rated operational current, AC-12, max.10 A
Rated value @ 400 V3 A
Rated value @ 690 V1 A
Rated value @ 230 V10 A
Rated value @ 24 V6 A
Rated value @ 110 V1 A
Rated value @ 220 V0.3 A
3RT6025-1BF40 — Control & Coil
ParameterValue
Control supply voltage typeDC
3RT6025-1BF40 — Contacts & Poles
ParameterValue
Main poles3
Main NO contacts3
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RT6025-1BF40 — Protection & Coordination
ParameterValue
Short-circuit coordination type 1, fusegL/gG LV HRC 3NA, DIAZED 5SB, NEOZED 5SE: 63 A
Short-circuit coordination type 2, fusegL/gG LV HRC 3NA, DIAZED 5SB, NEOZED 5SE: 25 A
Aux. switch short-circuit protection, fusefuse gL/gG: 10 A
3RT6025-1BF40 — Connection & Mounting
ParameterValue
Main circuit connectionscrew-type terminals
Aux. / control circuit connectionscrew-type terminals
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 methodscrew and snap-on mounting onto 35 mm DIN rail according to DIN EN 50022
Side-by-side mountingYes
3RT6025-1BF40 — Durability
ParameterValue
Durability (operating cycles, typ.)10 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RT6025-1BF40 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Storage temperature range-55 ... +80 °C
Installation altitude, max.2 000 m
3RT6025-1BF40 — Mechanical
ParameterValue
Width45 mm
Height85 mm
Depth107 mm

Product details

At 400 V and 60 °C it handles 23 kW motor power; at 690 V and 60 °C that climbs to 40 kW.

The AC-3 rated voltage maximum of 690 V means this contactor can switch three-phase induction motors on a 690 V line — common in European industrial networks. The AC-3e rating at the same voltage covers the newer energy-efficient motor standard, so it's forward-compatible with IE3/IE4 motor replacements. Main and auxiliary/control circuits both use screw-type terminals. The main terminals accept 2x (0.5 to 1.5 mm²) solid/stranded or 2x (0.75 to 2.5 mm²), with AWG equivalents of 2x (16 to 12) or 2x (14 to 8). Minimum permissible conductor at 40 °C and 60 °C is 10 mm² — important when sizing for full rated current without terminal overheating. Electrical life varies by duty: AC-1 and AC-3 maximum 1,000 cycles per hour, AC-4 maximum 300 cycles per hour, and DC switching at 1,500 cycles per hour.

Integration notes

The 110 V coil draws 6 A at 24 V rated value, 1 A at 110 V, 0.3 A at 220 V, 10 A at 230 V, 3 A at 400 V, and 1 A at 690 V — these are the pickup/hold currents for sizing the control transformer.

Frequently asked questions

Where can I buy 3RT6025-1BF40 and get a price?

This part is sourced and quoted to order against an RFQ through independent distribution. Submit an RFQ for current pricing and availability — confirmed at quote time.

What is the closest functional second-source to 3RT6025-1BF40?

The closest peer within the SIRIUS line is 3RT6023-1BW40, which shares the same Size S0 frame and screw-terminal format. The key difference is the coil voltage: 3RT6025-1BF40 has a 110 V coil, while 3RT6023-1BW40 uses a different coil rating. Panel fit and wiring footprint are identical — swap only if the control voltage matches.

Will 3RT6025-1BF40 drop into a panel specified for 3RT6023-1BW40 without rewiring?

Yes, the mechanical footprint (Size S0, DIN-rail snap-on, screw terminals) is identical. The only difference is the coil voltage — verify the control circuit voltage matches 110 V before installing. If the panel was wired for a different coil voltage, the contactor will not pick up.

What compliance documentation does Siemens provide for 3RT6025-1BF40?

The part carries a substance prohibition date of 05/01/2012, indicating RoHS compliance from that date. As a SIRIUS product it meets relevant IEC and EN standards for contactors (IEC 60947-4-1). Specific UL/CSA documentation should be confirmed at quote time — the evidence does not list those approvals directly.

MPN
3RT6025-1BF40