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Siemens 3RT1325-1BD40 — Contactors

Siemens 3RT1325-1BD40 SIRIUS Power Contactor, 4 NO, 7.5 kW A

MPN3RT1325-1BD40

Siemens SIRIUS, power contactor, 3RT1325-1BD40, S0 frame, 4 NO main contacts, 7.5 kW at AC-2 400 V, screw terminals, IP20 front.

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

3RT1325-1BD40 — Identification
ParameterValue
Contactor frame sizeS0
3RT1325-1BD40 — Ratings & Performance
ParameterValue
Rated value @ 400 V3 A
Rated value @ 230 V6 A
Rated value @ 24 V10 A
Rated value @ 60 V2 A
Rated value @ 110 V1 A
Rated value @ 220 V0.3 A
3RT1325-1BD40 — Control & Coil
ParameterValue
Control supply voltage typeDC
3RT1325-1BD40 — Contacts & Poles
ParameterValue
Main poles4
Main NO contacts4
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RT1325-1BD40 — Protection & Coordination
ParameterValue
Short-circuit coordination type 1, fusefuse gL/gG: 63 A
Short-circuit coordination type 2, fusefuse gL/gG: 25 A
Aux. switch short-circuit protection, fusefuse gL/gG: 10 A
3RT1325-1BD40 — Connection & Mounting
ParameterValue
Main circuit connectionscrew-type terminals
Conductor cross-section, solid2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²), max. 2x (0.75 ... 4 mm²)
Conductor cross-section, finely stranded w/ ferrule2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²)
Side-by-side mountingYes
3RT1325-1BD40 — Durability
ParameterValue
Durability (operating cycles, typ.)10 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RT1325-1BD40 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
3RT1325-1BD40 — Mechanical
ParameterValue
Width61 mm
Height85 mm
Depth101 mm

Product details

It carries four normally-open main contacts and is rated for 7.5 kW at AC-2 duty on a 400 V supply — that's the standard rating for slip-ring motor starting or moderate inrush loads. Side-by-side mounting is allowed without derating for the basic thermal current, so you can pack multiple units on the same rail for multi-motor groups.

The contactor is also rated for AC-1 at 230 V (6 A) and 400 V (3 A), covering heater or lighting circuits. Coordination fusing is specified: type 1 coordination calls for a 63 A gL/gG fuse, while type 2 requires a 25 A gL/gG fuse. That difference matters for selectivity studies — type 2 limits let-through energy to protect the contactor in a fault, type 1 allows the contactor to be replaced after a short circuit. The magnet coil draws 5.4 W both on closing and holding — a DC-operated coil that holds at the same power level, so there's no inrush spike to size your control transformer around.

Dimensions: 85 mm high, 61 mm wide, 101 mm deep. Terminal capacity for the main circuit: screw-type terminals accept 2x (1 to 2.5 mm²) solid or 2x (2.5 to 6 mm²) stranded, up to 2x 10 mm² maximum. For control wiring, the coil terminals accept 2x (0.5 to 1.5 mm²) solid or 2x (0.75 to 2.5 mm²) with ferrule. AWG equivalents: main contacts 2x (20 to 16), 2x (18 to 14), 1x 12. Side clearance: 6 mm at the side is required for heat dissipation when mounted side-by-side.

Frequently asked questions

Where can I buy 3RT1325-1BD40 and how do I get a price?

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

What is the closest functional second-source for 3RT1325-1BD40?

The 3RT1023-1AL20 is a smaller-frame SIRIUS contactor (S00 vs S0) with a lower AC-2 rating. It will not drop into the same panel without rewiring — the footprint, terminal spacing, and coil voltage differ. For a direct functional match within the S0 frame, stay with the 3RT1325 series.

What compliance documentation does Siemens provide for 3RT1325-1BD40?

As a current-production SIRIUS component, it carries CE marking, UL/CSA recognition, and RoHS/REACH compliance declarations. The manufacturer provides a declaration of conformity and a UL file number on request.

MPN
3RT1325-1BD40