SIEMENS
SIEMENS 3RT20261BB40 IEC Magnetic Contactor 24V DC 3P 1NO/1NC
IEC three-pole magnetic contactor with 24 V DC coil, 1NO/1NC auxiliary contacts, rated 25 A inductive and 40 A resistive up to 690 V AC, DIN-rail or surface mount, ten-million-cycle mechanical life
- Non-reversing three-pole contactor for reliable motor switching
- 24 V DC coil voltage suits low-voltage control circuits
- Auxiliary contacts 1NO/1NC provide status feedback and interlocking
- Screw terminals ensure secure wiring for power and control circuits
- DIN-rail or surface mounting fits standard panel layouts
IEC Magnetic Contactor 24V DC
The SIEMENS 3RT20261BB40 is a non-reversing three-pole contactor with a 24 V DC coil and 1NO/1NC auxiliary contacts. It mounts on DIN rail or surface and belongs to the SIRIUS 3RT20 series with S0 frame size. Electrical panels and machine builders use it to switch motor and resistive loads up to 690 V AC.
Capacity and headroom
The contactor handles inductive loads up to 25 A and resistive loads up to 40 A. Motor ratings reach 2 hp at 120 V AC single-phase and 20 hp at 600 V AC three-phase. Mechanical durability is rated for ten million cycles. It runs out of capacity above 690 V AC or beyond the 25 A inductive and 40 A resistive limits.
Mounting and compliance
Screw terminals accept standard wiring for both DIN rail and surface installation. The device operates from -13 °F to 140 °F and meets REACH Article 33 and WEEE 2012/19/EU requirements. Buyers who need reversing operation, different coil voltages or auxiliary contact counts must select another model.
Highlights
- Non-reversing three-pole contactor for reliable motor switching
- 24 V DC coil voltage suits low-voltage control circuits
- Auxiliary contacts 1NO/1NC provide status feedback and interlocking
- Screw terminals ensure secure wiring for power and control circuits
- DIN-rail or surface mounting fits standard panel layouts
Specifications
| Brand | SIEMENS |
|---|
Questions about this item
Will this 24V DC contactor work with my existing 690V AC motor circuit?
Yes, the contactor is rated for maximum operating voltages up to 690V AC and the 24V DC coil is independent of the main circuit voltage.
How do I confirm the 1NO/1NC auxiliary contacts are switching correctly after wiring?
Apply 24V DC to the coil terminals A1 and A2; the main power poles and the auxiliary contacts (1NO/1NC) will change state simultaneously, which you can verify with a multimeter.
Does the box include DIN rail clips or mounting screws for surface installation?
The contactor has integral DIN rail clips and mounting holes for surface screws; mounting hardware for the panel or rail is not included.
Also in this aisle
People compared these
Same shelf, same checkout — eight coins and a 30-minute rate lock.
