What it is and where it fits
The Siemens 3RT6026-1AM00 is a SIRIUS-brand power contactor in the S0 frame size, built for switching three-phase motor loads in control panels. It is rated for AC-3 duty up to 690 V, delivering 23 kW at 400 V and 40 kW at 690 V, so it handles pumps, conveyors, and compressors in that power band. It mounts on 35 mm DIN rail per DIN EN 50022 and accepts screw-type terminals for both main and control circuits. The 45 mm width and 97 mm depth keep panel fill factor tight — side-by-side mounting is supported.
Key ratings and what they mean for your BOM
The AC-3 rating at 400 V (23 kW) is the motor-switching spec that governs real-world sizing. The 690 V insulation voltage gives headroom for line supplies without derating the basic impulse level. Mechanical life is 10 million operations typical; electrical life depends on load. At AC-3 the maximum switching rate is 750 cycles per hour, so it keeps up with moderate cycling lines. For high-inertia loads or plugging duty, AC-4 rate drops to 250 cycles per hour — plan around that if your application reverses under load.
Lifecycle and sourcing posture
RoHS compliance date is May 1, 2012, which covers the EU RoHS 2 directive. The part carries no UL or CSA mark in the evidence, so verify acceptance for UL-listed panels if your spec requires it.
Mounting and wiring notes
Screw terminals accept 2x (0.5 to 1.5 mm²) solid or stranded for control wiring, and 2x (16 to 12 AWG) for main contacts. The minimum permissible cross-section at 40 °C and 60 °C is 10 mm² — use ferrules on stranded to avoid strand fan-out under the screw. Mounting position allows ±180° rotation on a vertical surface and ±22.5° tilt forward/backward, so it fits odd panel orientations. Ambient operating range is -25 to +60 °C; storage range -55 to +80 °C.