
Liebert 127195P2 Relay
The Liebert 127195P2 Potential Relay is a specialized electrical component engineered for precise compressor start assistance in high-performance cooling environments. Operating within a 220/240V voltage range, this relay is a critical asset for maintaining the operational integrity of Liebert environmental control systems. Designed for high-reliability applications, the 127195P2 serves as the direct replacement for 90-22 and is synonymous with the 3ARR3CT-10V5 specification found in veteran technical manuals. Its primary function is to sense the back-EMF (electromotive force) generated by the start winding and disconnect the start capacitor once the motor reaches sufficient velocity, ensuring optimized HVAC motor starting and preventing damage to critical components. This OEM HVAC replacement part is built to the rigorous standards of Vertiv Liebert systems, offering a universal potential relay profile that is also compatible with a wide array of 208-240V refrigeration units and industrial air conditioners. For contractors managing data center cooling or precise climate control systems, this relay ensures seamless system compatibility and long-term performance stability without the risk of common mechanical failures associated with generic substitutes.
Key Benefits:- Direct OEM Substitution: Fully replaces the 90-22 potential relay and 50PM28, maintaining factory-level performance in Liebert CRV and Mini-Mate2 units.
- Optimized Motor Protection: Precisely manages the disconnection of start capacitors to protect windings from overheating during the compressor start cycle.
- Wide Voltage Window: Engineered to operate reliably across 220V to 240V AC supplies, accommodating varying utility power conditions in commercial settings.
- Technical Reliability: Features the 3ARR3CT-10V5 technical design, known for durable contact points and consistent pick-up and drop-out voltage ratings.
Is the 127195P2 specifically for Liebert units?
While optimized for Liebert brand environmental systems, its universal potential relay design makes it suitable for various 240V HVACR applications requiring a N.C. (Normally Closed) contact configuration.
Can this relay replace a 90-22 model?
Yes, the 127195P2 is the direct cross-reference for the 90-22, providing the exact electrical specifications needed for seamless integration into existing control circuits.
What is the primary role of this relay in a start kit?
It functions as the switching mechanism that removes the start capacitor from the circuit once the compressor motor reaches approximately 75% of its rated speed, preventing capacitor failure and motor burnout.
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: $226.22
-65%$226.22
$79.18Liebert 127195P2 Relay
The Liebert 127195P2 Potential Relay is a specialized electrical component engineered for precise compressor start assistance in high-performance cooling environments. Operating within a 220/240V voltage range, this relay is a critical asset for maintaining the operational integrity of Liebert environmental control systems. Designed for high-reliability applications, the 127195P2 serves as the direct replacement for 90-22 and is synonymous with the 3ARR3CT-10V5 specification found in veteran technical manuals. Its primary function is to sense the back-EMF (electromotive force) generated by the start winding and disconnect the start capacitor once the motor reaches sufficient velocity, ensuring optimized HVAC motor starting and preventing damage to critical components. This OEM HVAC replacement part is built to the rigorous standards of Vertiv Liebert systems, offering a universal potential relay profile that is also compatible with a wide array of 208-240V refrigeration units and industrial air conditioners. For contractors managing data center cooling or precise climate control systems, this relay ensures seamless system compatibility and long-term performance stability without the risk of common mechanical failures associated with generic substitutes.
Key Benefits:- Direct OEM Substitution: Fully replaces the 90-22 potential relay and 50PM28, maintaining factory-level performance in Liebert CRV and Mini-Mate2 units.
- Optimized Motor Protection: Precisely manages the disconnection of start capacitors to protect windings from overheating during the compressor start cycle.
- Wide Voltage Window: Engineered to operate reliably across 220V to 240V AC supplies, accommodating varying utility power conditions in commercial settings.
- Technical Reliability: Features the 3ARR3CT-10V5 technical design, known for durable contact points and consistent pick-up and drop-out voltage ratings.
Is the 127195P2 specifically for Liebert units?
While optimized for Liebert brand environmental systems, its universal potential relay design makes it suitable for various 240V HVACR applications requiring a N.C. (Normally Closed) contact configuration.
Can this relay replace a 90-22 model?
Yes, the 127195P2 is the direct cross-reference for the 90-22, providing the exact electrical specifications needed for seamless integration into existing control circuits.
What is the primary role of this relay in a start kit?
It functions as the switching mechanism that removes the start capacitor from the circuit once the compressor motor reaches approximately 75% of its rated speed, preventing capacitor failure and motor burnout.
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.
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Description
The Liebert 127195P2 Potential Relay is a specialized electrical component engineered for precise compressor start assistance in high-performance cooling environments. Operating within a 220/240V voltage range, this relay is a critical asset for maintaining the operational integrity of Liebert environmental control systems. Designed for high-reliability applications, the 127195P2 serves as the direct replacement for 90-22 and is synonymous with the 3ARR3CT-10V5 specification found in veteran technical manuals. Its primary function is to sense the back-EMF (electromotive force) generated by the start winding and disconnect the start capacitor once the motor reaches sufficient velocity, ensuring optimized HVAC motor starting and preventing damage to critical components. This OEM HVAC replacement part is built to the rigorous standards of Vertiv Liebert systems, offering a universal potential relay profile that is also compatible with a wide array of 208-240V refrigeration units and industrial air conditioners. For contractors managing data center cooling or precise climate control systems, this relay ensures seamless system compatibility and long-term performance stability without the risk of common mechanical failures associated with generic substitutes.
Key Benefits:- Direct OEM Substitution: Fully replaces the 90-22 potential relay and 50PM28, maintaining factory-level performance in Liebert CRV and Mini-Mate2 units.
- Optimized Motor Protection: Precisely manages the disconnection of start capacitors to protect windings from overheating during the compressor start cycle.
- Wide Voltage Window: Engineered to operate reliably across 220V to 240V AC supplies, accommodating varying utility power conditions in commercial settings.
- Technical Reliability: Features the 3ARR3CT-10V5 technical design, known for durable contact points and consistent pick-up and drop-out voltage ratings.
Is the 127195P2 specifically for Liebert units?
While optimized for Liebert brand environmental systems, its universal potential relay design makes it suitable for various 240V HVACR applications requiring a N.C. (Normally Closed) contact configuration.
Can this relay replace a 90-22 model?
Yes, the 127195P2 is the direct cross-reference for the 90-22, providing the exact electrical specifications needed for seamless integration into existing control circuits.
What is the primary role of this relay in a start kit?
It functions as the switching mechanism that removes the start capacitor from the circuit once the compressor motor reaches approximately 75% of its rated speed, preventing capacitor failure and motor burnout.
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.











