
Liebert E-0100S Contactor
When you're dealing with high-demand precision cooling or industrial HVAC systems, the Liebert E-0100S Contactor is a standard replacement for maintaining triple-phase power control. This 3-pole definite purpose contactor is engineered to manage inductive loads like compressors and fan motors, rated for a 40A full load (FLA) and a 50A resistive load. The integrated 24V AC coil ensures seamless integration with standard low-voltage control circuits, providing reliable 240V to 600V power switching for critical data center climate units and air conditioners. Relying on silver cadmium oxide contacts, this unit minimizes arcing and pitting, extending the service life of the internal components under high-cycle conditions.
The Liebert E-0100S features a compact footprint for tight enclosures and a universal mounting plate for straightforward field swaps. Whether you are troubleshooting a stuck contactor or a burnt-out 24V coil, this component provides the high-amperage switching capacity needed for Liebert precision cooling units and other heavy-duty machinery. Its double-break contact design guarantees a positive make-and-break every time the thermostat signals for cooling, preventing expensive motor burnouts or system failures due to welded contacts.
Key Benefits:- High Amperage Rating: Supports 40A FLA and 50A resistive loads, making it suitable for both inductive motors and heating elements.
- 3-Pole Design: Specifically built for three-phase power applications across 240V, 480V, and 600V circuits.
- Standard 24V Coil: Compatible with most HVAC control transformers and 24VAC thermostats.
- Durable Contacts: Heavy-duty construction reduces wear from arcing and prevents terminals from welding shut.
- Universal Compatibility: Fits Liebert cooling systems and a variety of universal HVAC or industrial applications requiring a 3-pole 40A switch.
- Can I use a 50A contactor to replace a 40A unit? Yes, you can always go up in amperage (FLA) as long as the coil voltage and number of poles match the original specifications.
- How do I check if the 24V coil is defective? Use a multimeter to check resistance across the coil terminals. If you read "OL" (Open Line), the coil is burnt out and the contactor requires replacement.
- What causes a humming sound in the contactor? A buzzing or humming noise usually indicates that the coil is energized but debris or pitting is preventing the plunger from pulling in completely.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
Original: $124.79
-65%$124.79
$43.68Liebert E-0100S Contactor
When you're dealing with high-demand precision cooling or industrial HVAC systems, the Liebert E-0100S Contactor is a standard replacement for maintaining triple-phase power control. This 3-pole definite purpose contactor is engineered to manage inductive loads like compressors and fan motors, rated for a 40A full load (FLA) and a 50A resistive load. The integrated 24V AC coil ensures seamless integration with standard low-voltage control circuits, providing reliable 240V to 600V power switching for critical data center climate units and air conditioners. Relying on silver cadmium oxide contacts, this unit minimizes arcing and pitting, extending the service life of the internal components under high-cycle conditions.
The Liebert E-0100S features a compact footprint for tight enclosures and a universal mounting plate for straightforward field swaps. Whether you are troubleshooting a stuck contactor or a burnt-out 24V coil, this component provides the high-amperage switching capacity needed for Liebert precision cooling units and other heavy-duty machinery. Its double-break contact design guarantees a positive make-and-break every time the thermostat signals for cooling, preventing expensive motor burnouts or system failures due to welded contacts.
Key Benefits:- High Amperage Rating: Supports 40A FLA and 50A resistive loads, making it suitable for both inductive motors and heating elements.
- 3-Pole Design: Specifically built for three-phase power applications across 240V, 480V, and 600V circuits.
- Standard 24V Coil: Compatible with most HVAC control transformers and 24VAC thermostats.
- Durable Contacts: Heavy-duty construction reduces wear from arcing and prevents terminals from welding shut.
- Universal Compatibility: Fits Liebert cooling systems and a variety of universal HVAC or industrial applications requiring a 3-pole 40A switch.
- Can I use a 50A contactor to replace a 40A unit? Yes, you can always go up in amperage (FLA) as long as the coil voltage and number of poles match the original specifications.
- How do I check if the 24V coil is defective? Use a multimeter to check resistance across the coil terminals. If you read "OL" (Open Line), the coil is burnt out and the contactor requires replacement.
- What causes a humming sound in the contactor? A buzzing or humming noise usually indicates that the coil is energized but debris or pitting is preventing the plunger from pulling in completely.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
When you're dealing with high-demand precision cooling or industrial HVAC systems, the Liebert E-0100S Contactor is a standard replacement for maintaining triple-phase power control. This 3-pole definite purpose contactor is engineered to manage inductive loads like compressors and fan motors, rated for a 40A full load (FLA) and a 50A resistive load. The integrated 24V AC coil ensures seamless integration with standard low-voltage control circuits, providing reliable 240V to 600V power switching for critical data center climate units and air conditioners. Relying on silver cadmium oxide contacts, this unit minimizes arcing and pitting, extending the service life of the internal components under high-cycle conditions.
The Liebert E-0100S features a compact footprint for tight enclosures and a universal mounting plate for straightforward field swaps. Whether you are troubleshooting a stuck contactor or a burnt-out 24V coil, this component provides the high-amperage switching capacity needed for Liebert precision cooling units and other heavy-duty machinery. Its double-break contact design guarantees a positive make-and-break every time the thermostat signals for cooling, preventing expensive motor burnouts or system failures due to welded contacts.
Key Benefits:- High Amperage Rating: Supports 40A FLA and 50A resistive loads, making it suitable for both inductive motors and heating elements.
- 3-Pole Design: Specifically built for three-phase power applications across 240V, 480V, and 600V circuits.
- Standard 24V Coil: Compatible with most HVAC control transformers and 24VAC thermostats.
- Durable Contacts: Heavy-duty construction reduces wear from arcing and prevents terminals from welding shut.
- Universal Compatibility: Fits Liebert cooling systems and a variety of universal HVAC or industrial applications requiring a 3-pole 40A switch.
- Can I use a 50A contactor to replace a 40A unit? Yes, you can always go up in amperage (FLA) as long as the coil voltage and number of poles match the original specifications.
- How do I check if the 24V coil is defective? Use a multimeter to check resistance across the coil terminals. If you read "OL" (Open Line), the coil is burnt out and the contactor requires replacement.
- What causes a humming sound in the contactor? A buzzing or humming noise usually indicates that the coil is energized but debris or pitting is preventing the plunger from pulling in completely.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.












