Selecting the right 2-pole, 100A contactor is essential for reliable control of motors, lighting, and HVAC units. The following hand-picked options are designed for 110–120V or 220–240V coil voltages and offer solid ratings for AC-7a/AC-7b loads, DIN rail mounting, and robust build quality. This guide highlights 5 top choices with different coil voltages and configurations to fit common American installations.
| Product | Coil Voltage | Contacts | Pole Count | Mounting |
|---|---|---|---|---|
| Baomain HC1-100/20 | AC 110V | 2NO | 2 Pole | DIN Rail |
| Heschen HSR1-100 | AC 220V | 2NC | 2 Pole | DIN Rail |
| Baomain BCT-63/20-110VAC | AC 110V | 2NO | 2 Pole | DIN Rail |
| Oumefar BVH8-100 | AC unspecified (UL listed) | 2NO | 2 Pole | Modular |
| Shopcorp 4 Pole | AC 110/120V coil | 4 NO | 4 Pole | DIN Rail |
Baomain HC1-100/20 AC Contactor – 2 Pole, 100A, 110V Coil
The Baomain HC1-100/20 is a 2-pole, two normally open (NO) contactor designed for 110V AC control. It handles up to 100A ITH with a Ui of 500V and Ue of 400V, making it suitable for HVAC, pumps, and general motor control in residential or light commercial settings. The device is DIN-rail mounted, simplifying integration with existing breaker panels. Its rating supports AC-7a up to 100A and AC-7b up to 40A, ensuring reliable switching for common loads when the coil is driven at AC 110V, 50/60 Hz.
Heschen HSR1-100 2P Contactor – 100A, NC Version, 220V Coil
The Heschen HSR1-100 is a 2-pole contactor with two normally closed (NC) contacts and a coil rated for 220V. It is designed for 100A loads with a Ui of 500V and Ue of 250V. This configuration is well-suited for applications where a normally closed contact is preferred for ensuring a fail-safe shutdown, such as certain lighting or control circuits. The unit mounts on a 35mm DIN rail, offering straightforward integration into standard control panels.
Baomain 2-Pole DIN Rail Contactor – 63A, 110V, 2NO
This Baomain module is a 2-pole, 2NO contactor rated for 110V AC with a 63A current capacity (AC-7a 63A, AC-7b 25A). It features a compact DIN-rail ready form factor (85 x 36 x 65 mm) for easy installation alongside circuit breakers. It supports 500V Ui and 400V Ue, with a resilient design to handle HVAC, motor, and lighting control. The unit emphasizes compactness and straightforward integration, making it a practical choice for space-constrained panels.
Oumefar Ultra-Silent 2-Pole Contactor – 100A, 110V/AC Coil
The Oumefar 100A contactor emphasizes ultra-silent operation and energy-saving features. It targets common building electrical control fields where reduced audible noise and stable switching are valued. The coil and electromagnetic system are designed to minimize power usage during sustained operation while delivering robust performance for 100A AC-7a style loads. The model is positioned for reliable long-term switching with a focus on quiet operation.
Shopcorp 4 Pole Contactor – 120V Coil, 100A
The Shopcorp four-pole contactor is designed for 120V coil operation with a 100A load capacity and four normally open contacts. It is a slim DIN-rail compatible model suitable for HVAC, lighting, and motor control. The device supports a wide range of loads with IEC/EN compliance, and it offers a practical solution for multi-circuit control where space is at a premium. It’s well-suited for applications requiring discrete control of multiple circuits from a single contactor assembly.
Buying Guide: Key Purchase Considerations
- Coil voltage compatibility: Match the contactor coil to your control circuitry (110–120V vs. 220–240V). Incorrect coil voltage will prevent operation or cause unreliable switching.
- Current and load type: Check Ith (inrush/current rating) and the contactor’s AC-7a/AC-7b ratings to ensure compatibility with resistive, inductive, or motor loads. Consider AC-7a for steady loads and AC-7b for higher inductive loads.
- Pole count and contact arrangement: Choose 2-pole or 4-pole configurations based on the number of circuits you want to switch. Two normally open (NO) contacts are common for motors, while two normally closed (NC) may be used for fail-safe designs.
- Mounting and form factor: DIN rail mounting is common in control panels; ensure the device fits the available DIN rail space and does not conflict with other components. For modular or compact installations, check the rail width and height.
- Voltage ratings and safety: Ui and Ue ratings indicate insulation limits and working voltage. Ensure these values align with your system’s supply and protective devices. Look for UL/CE listings for safety compliance.
- Durability and lifecycle: Consider devices with higher full-load switching life and quieter operation if your environment has noise sensitivity or frequent switching.
- Environment and installation notes: Some models require short-circuit protection (fuses or MCBs) and spacing plates for heat management. Verify the installation guidelines for your enclosure.
- Documentation and replacement parts: Favor products with clear datasheets and readily available replacement coils or auxiliary contacts to simplify maintenance.
- Cost versus features: Compare coil voltage, number of poles, contact arrangement, and mounting options to determine which model delivers the best value for your specific application.
- Application scope: These devices suit HVAC, lighting, pumps, and motor control. Consider the expected duty cycle and environmental protections when choosing a model.