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Siemens 3RT2627-1AL25 — Contactors

Siemens SIRIUS 3RT2627-1AL25 Capacitor Contactor, Size S0, 4

MPN3RT2627-1AL25

Siemens SIRIUS capacitor contactor, Size S0, 3RT2627-1AL25, 45 mm width, screw-type terminals, snap-on DIN rail mounting.

Siemens 3RT2627-1AL25 datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

3RT2627-1AL25 — Identification
ParameterValue
Contactor frame sizeS0
3RT2627-1AL25 — Control & Coil
ParameterValue
Control supply voltage typeAC
Rated value @ 50 Hz0.8 ... 1.1
Rated value @ 50 Hz230 V
3RT2627-1AL25 — Contacts & Poles
ParameterValue
Main poles3
Main NO contacts3
Auxiliary contact reliability0.00000001
3RT2627-1AL25 — Protection & Coordination
ParameterValue
Aux. switch short-circuit protection, fusegG: 10 A (500 V, 1 kA)
3RT2627-1AL25 — 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
3RT2627-1AL25 — Durability
ParameterValue
Durability with aux. switch block (cycles, typ.)3 000 000
3RT2627-1AL25 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Storage temperature range-55 ... +80 °C
Installation altitude, max.2 000 m
3RT2627-1AL25 — Mechanical
ParameterValue
Width45 mm
Height135 mm
Depth155 mm
3RT2627-1AL25 — Specifications
ParameterValue
At AC4 ... 16 ms

Product details

Capacitor switching contactor for power factor correction banks

Rated switching currents: 6 A at 230 V AC, 3 A at 400 V AC, and 1 A at 690 V AC — these ratings reflect the capacitor inrush current capability, not motor load. Dimensions: 135 mm height, 45 mm width, 155 mm depth. The Size S0 frame keeps the panel footprint compact for multi-bank PFC systems.

Magnet coil uses screw-type terminals. Solid conductors: 2x (0.5 to 1.5 mm²), 2x (0.75 to 2.5 mm²), or 2x 4 mm². Stranded: 2x (1 to 2.5 mm²) or 2x (2.5 to 10 mm²).

Frequently asked questions

Will 3RT2627-1AL25 drop into a panel specified around 3RT1025-1AN24 without rewiring?

Both are Size S0 with the same 45 mm width and DIN-rail mounting, so the mechanical fit is the same. However, the 3RT2627-1AL25 is a capacitor contactor with different coil ratings and switching characteristics — verify the coil voltage and control circuit match before installing, and ensure the capacitor inrush duty is within the 3RT2627-1AL25's ratings.

MPN
3RT2627-1AL25