Eaton Cutler-Hammer FH21 Heater Overload
The Eaton Cutler-Hammer FH21 is a precision-engineered thermal overload heater element designed for use with NEMA rated Type A and B starter assemblies. This specific FH-Series heater is critical for motor protection, providing reliable thermal protection against overcurrent conditions that can lead to permanent motor winding damage. Engineered for Type 1 manual starters and mag-starters, the FH21 features a specific trip rating calibrated to match the motor's Full Load Amps (FLA). When installed within a motor control center (MCC) or individual enclosure, these Cutler-Hammer heater coils respond to heat generated by current flow, ensuring the circuit interrupts before the motor reaches critical temperatures. For contractors, verifying the heater selection table is essential to ensure the trip curve aligns with the application requirements, providing consistent overload protection in industrial and commercial environments.
Key Benefits for Technicians- Precise Current Calibration: Designed for an exact ampacity range to prevent nuisance tripping while maintaining thermal safety.
- NEMA Compatibility: Fully compatible with Cutler-Hammer Freedom Series and legacy Type A/B starters.
- Durable Construction: Built to withstand the thermal cycling inherent in heavy-duty HVACR motor control applications.
- Direct OEM Replacement: Ensures compliance with original equipment specifications and electrical codes.
How do I select the correct FH heater for my application?
Selection must be based on the motor's Full Load Amperage (FLA) listed on the nameplate. Consult the Eaton heater selection chart for your specific starter size and enclosure type to identify the correct FH code.
Can the FH21 be used in 3-phase applications?
Yes, provided the starter is equipped with three thermal overload blocks, each requiring its own FH21 element to ensure balanced protection across all phases.
Does the FH21 provide short-circuit protection?
No, these thermal heaters are designed specifically for overload protection. Short-circuit and ground-fault protection must be provided by a separate circuit breaker or fused disconnect.
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.
Eaton Cutler-Hammer FH21 Heater Overload
The Eaton Cutler-Hammer FH21 is a precision-engineered thermal overload heater element designed for use with NEMA rated Type A and B starter assemblies. This specific FH-Series heater is critical for motor protection, providing reliable thermal protection against overcurrent conditions that can lead to permanent motor winding damage. Engineered for Type 1 manual starters and mag-starters, the FH21 features a specific trip rating calibrated to match the motor's Full Load Amps (FLA). When installed within a motor control center (MCC) or individual enclosure, these Cutler-Hammer heater coils respond to heat generated by current flow, ensuring the circuit interrupts before the motor reaches critical temperatures. For contractors, verifying the heater selection table is essential to ensure the trip curve aligns with the application requirements, providing consistent overload protection in industrial and commercial environments.
Key Benefits for Technicians- Precise Current Calibration: Designed for an exact ampacity range to prevent nuisance tripping while maintaining thermal safety.
- NEMA Compatibility: Fully compatible with Cutler-Hammer Freedom Series and legacy Type A/B starters.
- Durable Construction: Built to withstand the thermal cycling inherent in heavy-duty HVACR motor control applications.
- Direct OEM Replacement: Ensures compliance with original equipment specifications and electrical codes.
How do I select the correct FH heater for my application?
Selection must be based on the motor's Full Load Amperage (FLA) listed on the nameplate. Consult the Eaton heater selection chart for your specific starter size and enclosure type to identify the correct FH code.
Can the FH21 be used in 3-phase applications?
Yes, provided the starter is equipped with three thermal overload blocks, each requiring its own FH21 element to ensure balanced protection across all phases.
Does the FH21 provide short-circuit protection?
No, these thermal heaters are designed specifically for overload protection. Short-circuit and ground-fault protection must be provided by a separate circuit breaker or fused disconnect.
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 Eaton Cutler-Hammer FH21 is a precision-engineered thermal overload heater element designed for use with NEMA rated Type A and B starter assemblies. This specific FH-Series heater is critical for motor protection, providing reliable thermal protection against overcurrent conditions that can lead to permanent motor winding damage. Engineered for Type 1 manual starters and mag-starters, the FH21 features a specific trip rating calibrated to match the motor's Full Load Amps (FLA). When installed within a motor control center (MCC) or individual enclosure, these Cutler-Hammer heater coils respond to heat generated by current flow, ensuring the circuit interrupts before the motor reaches critical temperatures. For contractors, verifying the heater selection table is essential to ensure the trip curve aligns with the application requirements, providing consistent overload protection in industrial and commercial environments.
Key Benefits for Technicians- Precise Current Calibration: Designed for an exact ampacity range to prevent nuisance tripping while maintaining thermal safety.
- NEMA Compatibility: Fully compatible with Cutler-Hammer Freedom Series and legacy Type A/B starters.
- Durable Construction: Built to withstand the thermal cycling inherent in heavy-duty HVACR motor control applications.
- Direct OEM Replacement: Ensures compliance with original equipment specifications and electrical codes.
How do I select the correct FH heater for my application?
Selection must be based on the motor's Full Load Amperage (FLA) listed on the nameplate. Consult the Eaton heater selection chart for your specific starter size and enclosure type to identify the correct FH code.
Can the FH21 be used in 3-phase applications?
Yes, provided the starter is equipped with three thermal overload blocks, each requiring its own FH21 element to ensure balanced protection across all phases.
Does the FH21 provide short-circuit protection?
No, these thermal heaters are designed specifically for overload protection. Short-circuit and ground-fault protection must be provided by a separate circuit breaker or fused disconnect.
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.
