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This guide is for electricians and automation professionals who need reliable control of lighting, small motors, and HVAC systems. The Acti9 iCT modular contactor offers flexible remote and manual control with two normally open contacts, ensuring efficient operation. A key caveat is its specific coil voltage requirement, which must match the control circuit.
| Series | Acti9 |
|---|---|
| Model Part Number | A9C21132 |
| Brand | Schneider Electric |
The coil operates on 24 VAC at 50Hz. It is crucial to supply the correct voltage to ensure proper function and prevent damage.
This model (A9C21132) features two (2) normally open (NO) contacts.
It is rated for AC-7b applications up to 8.5A, which is suitable for starting small motors. For larger motors, a dedicated motor-rated contactor is recommended.
The slider allows for manual operation of the contactor, enabling you to switch the contacts ON or OFF without energizing the control coil. This is useful for testing or maintenance.
The electrical lifespan is rated for 100,000 cycles for AC-7A/AC-1 applications.
It occupies two modular spacings, which typically equates to 36mm (2 x 18mm) on a standard DIN rail.
No, the iCT contactor has an IP20 rating, meaning it is protected against solid objects but not against water or dust ingress. It should be installed in a suitable enclosure.
Verify the control voltage is exactly 24 VAC and applied to the correct coil terminals (A1/A2). Check for any obstructions preventing the armature movement. Ensure the manual slider is not engaged in the manual 'ON' position if remote control is expected.
This indicates a potential overload or electrical fault. Disconnect power immediately. Inspect contacts for damage. If contacts are damaged, the contactor will need replacement. Ensure the load current does not exceed the rated limits (25A AC-7a / 8.5A AC-7b).
Check if the load current exceeds the contactor's rating for the specific application type (AC-7a or AC-7b). Ensure adequate ventilation around the contactor within the enclosure. Loose wiring connections can also cause overheating.
Setup: Mount the iCT contactor onto a standard 35mm DIN-rail. Connect the control circuit wires to the coil terminals (typically marked A1/A2). Wire the load circuit through the two normally open (NO) contacts. Ensure the control voltage supplied to the coil is 24 VAC, 50Hz, matching the product specifications.
Compatibility: This contactor is fully compatible with all Schneider Electric Acti9 control accessories and other Acti9 modular devices. Ensure your control circuit voltage is 24 VAC.
Care: The iCT contactor is designed for low-maintenance operation. Keep the surrounding area clean and free of dust. Periodically inspect wiring connections for tightness. No internal cleaning is typically required for standard applications.
