SIEMENS
SIEMENS 43CP32AF reversing magnetic contactor 3P 18 A 120 V AC NEMA 0
A three-pole reversing magnetic contactor rated 18 A at 120 V AC in NEMA size 0
- Reverses motor direction with built-in reversing capability
- Handles 18 A inductive loads on three poles
- Operates on 110/120 V AC coil voltage
- Compact 7.69 in height fits tight panels
- Includes four auxiliary contacts (2NO/2NC) for control circuits
Reversing magnetic contactor for three-phase loads
The SIEMENS 43CP32AF is a three-pole reversing contactor rated at 18 A inductive load with a 110/120 V AC coil. It suits motor-control panels that need forward and reverse switching in a compact NEMA Size 0 format. Surface mounting and screw terminals simplify installation in industrial cabinets.
Sustained operation at rated current
The contactor carries 18 A continuously without a resistive rating, so it is sized for inductive motor loads rather than heater circuits. Auxiliary contacts provide 2NO/2NC for interlocks and status feedback, supporting up to eight additional modules for expanded control logic. The 120 V AC coil draws steady power during extended duty cycles.
Open construction with surface mounting
No enclosure is included, so the unit must be installed inside a suitable cabinet or panel. Overall dimensions are 7.69 in height by 7.75 in width, fitting standard NEMA 0 cut-outs. Screw terminals accept ring or fork lugs for secure wiring, and the four built-in auxiliary contacts reduce the need for separate relay blocks.
Highlights
- Reverses motor direction with built-in reversing capability
- Handles 18 A inductive loads on three poles
- Operates on 110/120 V AC coil voltage
- Compact 7.69 in height fits tight panels
- Includes four auxiliary contacts (2NO/2NC) for control circuits
Specifications
| Brand | SIEMENS |
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Questions about this item
How much heat does the 18 A reversing contactor generate during continuous all-day operation?
The contactor carries an 18 A inductive load through three poles with a 110/120 V AC coil; heat rise depends on duty cycle and enclosure ventilation, which are not detailed in the specifications.
What control circuit and wiring must already be in place for the 110/120 V AC coil to operate?
A 110/120 V AC control supply, fused or breaker-protected, wired to the coil terminals via screw connections; the starter also requires a three-phase power feed rated for 18 A inductive load.
Will the NEMA Size 0 starter with 7.69 in height and 7.75 in width fit in the same cut-out as an older NEMA Size 0 unit?
Overall dimensions are 7.69 in high by 7.75 in wide with surface mounting; compare these measurements to the existing enclosure cut-out and hole pattern before retrofitting.
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