SIEMENS
SIEMENS 3RT23161BB40 IEC Magnetic Contactor 4NO 24V DC 4P Non-Reversing
IEC magnetic contactor with 4 NO contacts, 24 V DC coil, 9 A inductive and 18 A resistive ratings, DIN-rail or surface mounting
- 4 normally open poles switch 18 A resistive loads
- 24 V DC coil voltage suits low-voltage control circuits
- Non-reversing design simplifies starter wiring for single-direction motors
- DIN rail and surface mounting options fit standard S00 frames
- Compact 3.08 in height by 1.97 in width saves panel space
IEC 4-pole 24V DC contactor
The SIEMENS 3RT23161BB40 is a non-reversing IEC magnetic contactor with four normally open power poles. It operates from a 24V DC coil and is rated for 9 A inductive and 18 A resistive full-load current. The unit uses screw terminals and mounts on DIN rail or directly on a surface within the S00 frame size.
Panels needing four switched poles without reversing
This contactor suits control panels that require four-pole switching for motors, heating or lighting loads where a reversing function is not needed. The 24V DC coil integrates with low-voltage PLC outputs or safety relays. Installations that need built-in auxiliary contacts, an enclosed housing or AC coil operation should look at a different device.
24V DC coil voltage
The coil voltage is the single specification that determines whether this contactor matches the control circuit. A 24V DC coil will not operate on AC supplies or higher DC voltages, so the control source must provide exactly 24V DC.
Highlights
- 4 normally open poles switch 18 A resistive loads
- 24 V DC coil voltage suits low-voltage control circuits
- Non-reversing design simplifies starter wiring for single-direction motors
- DIN rail and surface mounting options fit standard S00 frames
- Compact 3.08 in height by 1.97 in width saves panel space
Specifications
| Brand | SIEMENS |
|---|
Questions about this item
Should I pick the 4-pole version or a 3-pole alternative for my motor circuit?
This contactor provides four normally open poles rated 9 A inductive and 18 A resistive at 24 V DC, so choose it when you need to switch four lines simultaneously without auxiliary contacts.
What does the 9 A inductive rating mean when the contactor is installed in a control panel?
It indicates the maximum continuous inductive load each pole can carry at 24 V DC coil voltage without overheating when mounted on DIN rail or surface.
How does the IEC frame size S00 limit the wire size I can connect to the screw terminals?
Frame size S00 defines the physical envelope and terminal capacity for this series; the screw terminals accept conductors suited to the 9 A inductive and 18 A resistive ratings.
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