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Siemens 3RT2627-1BF45 — Contactors

Siemens 3RT2627-1BF45 SIRIUS Capacitor Contactor, S0, 24 VDC

MPN3RT2627-1BF45
Active

Siemens SIRIUS capacitor contactor, size S0, 24 VDC coil, screw-type terminals, 45 mm width, 6 A at 230 V.

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

Specifications

3RT2627-1BF45 — Identification
ParameterValue
Contactor frame sizeS0
3RT2627-1BF45 — Control & Coil
ParameterValue
Control supply voltage typeDC
3RT2627-1BF45 — Contacts & Poles
ParameterValue
Main poles3
Main NO contacts3
Auxiliary contact reliability0.00000001
3RT2627-1BF45 — Protection & Coordination
ParameterValue
Aux. switch short-circuit protection, fusegG: 10 A (500 V, 1 kA)
3RT2627-1BF45 — Connection & Mounting
ParameterValue
Main circuit connectionscrew-type terminals
Aux. / control circuit connectionscrew-type terminals
Conductor cross-section, solid2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²), 2x 4 mm²
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 according to DIN EN 50022
3RT2627-1BF45 — Durability
ParameterValue
Durability with aux. switch block (cycles, typ.)3 000 000
3RT2627-1BF45 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Storage temperature range-55 ... +80 °C
Installation altitude, max.2 000 m
3RT2627-1BF45 — Mechanical
ParameterValue
Width45 mm
Height135 mm
Depth165 mm

Product details

Capacitor switching, S0 frame, 24 VDC coil

The 24 VDC coil with screw-type terminals pulls in reliably and drops out cleanly — no AC hum, no hold-in issues on marginal DC supplies. Rated for 6 A at 230 V AC, 3 A at 400 V, and 1 A at 690 V, so it handles the inrush from discharged capacitors without welding the main poles.

The 45 mm width and 135 mm height mean it occupies a single standard module slot — no special adapter needed. Depth of 165 mm leaves clearance for wiring behind the panel door.

Screw terminals accept solid conductors: 2x (0.5–1.5 mm²), 2x (0.75–2.5 mm²), or 2x 4 mm². Stranded: 2x (1–2.5 mm²) or 2x (2.5–10 mm²). At 40 °C ambient, a single 10 mm² conductor is the limit; at 60 °C, two 10 mm² conductors are allowed. That covers most panel-building practices for a contactor this size — no need for ring-tongue adapters on the main poles.

Frequently asked questions

What are the key switching ratings for 3RT2627-1BF45?

Rated 6 A at 230 V AC, 3 A at 400 V, and 1 A at 690 V. Coil is 24 VDC with screw-type terminals.

Where can I buy 3RT2627-1BF45?

Sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time.

Will 3RT2627-1BF45 drop into a panel specified for 3RT2526-1BF40?

Both are S0-frame capacitor contactors with 24 VDC coils and screw terminals, so the footprint and wiring pattern are the same. The 3RT2627-1BF45 carries higher switching ratings — 6 A vs 4 A at 230 V — so it is a direct functional upgrade without rewiring.

MPN
3RT2627-1BF45