Description
ATO 43A AC capacitor contactor for capacitor bank control and reactive power compensation systems, supporting capacitor loads up to 20 kVAr. Features include a 3-pole structure, 1NO+1NC auxiliary contacts, AC 220V/380V selectable coil voltage, DIN rail mounting, screw terminals, and capacitor protection for reliable operation in electrical cabinets.
Specification
| Model | ATO-CJ19-4311 |
| Rated Current | 43A |
| Rated Coil Voltage | AC 220V/380V |
| Maximum Controlled Capacitor Capacity | 20 kVAr |
| Number of Poles | 3P |
| Auxiliary Contact Configuration | 1NO+1NC |
| Rated Frequency | 50Hz |
| Operating Current | 37A |
| Conventional Thermal Current | 43A |
| Electrical Life | 80000 operations |
| Mechanical Life | 800000 operations |
| Mounting Method | DIN Rail Mount |
| Wiring Method | Screw Terminal |
| Protection Type | Capacitor Protection |
| Ambient Temperature | -5–40℃ |
| Protection Degree | IP20 |
| Dimensions | 90 × 58 × 136mm |
| Weight | 0.64kg |
Feature
- 43A Capacitor Switching Capacity: The capacitor contactor supports capacitor banks up to 20 kVAr, suitable for reactive power compensation and capacitor control applications.
- Reliable 3-Pole Structure: Provides stable switching performance with a 3P main contact configuration for capacitor loads.
- AC 220V/380V Selectable Coil Voltage: ATO capacitor contactor supports AC 220V/380V selectable coil voltage, ensuring compatibility with different control voltage requirements and flexible electrical system integration.
- 1NO+1NC Auxiliary Contacts: Enables additional control and monitoring functions for improved system flexibility.
- DIN Rail Mounting Design: The capacitor switching contactor supports quick installation in electrical cabinets and control panels with standard 35mm DIN rails.
- Capacitor Protection Function: Optimized for capacitor bank switching, helping reduce electrical stress and improve operational reliability.
- Durable Mechanical & Electrical Life: Industrial capacitor contactor provides up to 800,000 mechanical operations and 80,000 electrical operations for long-term use.
- Compact Industrial Design: IP20 protection rating and compact dimensions (90 × 58 × 136mm) for space-saving cabinet installation.
- Safe Screw Terminal Wiring: The 43A AC capacitor contactor ensures secure connections and convenient installation with reliable terminal design.
Detail
Size (unit: mm)
| Amax | Bmax | Cmax | Dmax | E | F |
| 90 | 58 | 136 | 86 | 40 | 48 |
Wiring
220V
380V
Application
Tips: How can I extend the service life of the capacitor contactor?
Regular maintenance helps ensure reliable operation and extend the service life of the capacitor contactor. Regularly check terminal tightness, contact wear, operating temperature, and abnormal noise during operation. Keeping the contactor clean, ensuring proper wiring, and using it within the rated current and capacitor capacity range can help reduce electrical stress, prevent overheating, and maintain stable switching performance.
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