Eaton Cutler-Hammer C321KM30 Mechanical Interlock
The Eaton Cutler-Hammer C321KM30 Mechanical Interlock is a critical field-installable accessory designed for Freedom Series NEMA size 00, 0, 1, and 2 starters and contactors. Engineered for horizontal mounting configurations, this heavy-duty mechanical link ensures positive electrical isolation by preventing two opposing contactors from closing simultaneously. This hardware is essential for reversing motor applications and multi-source power transfers where interlocking logic is required to prevent phase-to-phase shorts. The C321KM30 interlock features high-impact thermoplastic construction and precision-aligned slide mechanisms to provide a reliable physical barrier that maintains contactor timing and sequencing. It is compatible with Eaton CN15 and AN16 starter series, allowing for seamless integration into existing IEC and NEMA motor control centers. Whether you are performing a field conversion or replacing a worn side-mount interlock, this component ensures strict adherence to safety protocols in industrial automated systems and HVAC motor control panels.
Key Benefits for Technicians:
- Universal Compatibility: Designed specifically for Freedom Series starters ranging from NEMA Size 00 through Size 2.
- Mechanical Safety: Provides a robust physical lockout to prevent simultaneous energization in reversing contactor setups.
- Easy Installation: Facilitates quick field mounting between two adjacent contactors without complex modifications.
- Durable Construction: Built to withstand the high-cycle demands of industrial motor control circuits.
Common Technical Questions:
Will the C321KM30 work with NEMA Size 3 starters?
No, this specific model is engineered for NEMA Sizes 00, 0, 1, and 2. Larger frame sizes require the C321KM60 or similar heavy-duty interlocks.
Does this interlock include electrical auxiliary contacts?
The C321KM30 is a mechanical interlock only. If electrical interlocking is required for your logic circuit, you must install additional auxiliary contact blocks.
Can I use this for vertical mounting?
This unit is specifically designed for horizontal mounting. Vertical configurations typically require a different interlocking kit to account for gravity and mechanical leverage.
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 C321KM30 Mechanical Interlock
The Eaton Cutler-Hammer C321KM30 Mechanical Interlock is a critical field-installable accessory designed for Freedom Series NEMA size 00, 0, 1, and 2 starters and contactors. Engineered for horizontal mounting configurations, this heavy-duty mechanical link ensures positive electrical isolation by preventing two opposing contactors from closing simultaneously. This hardware is essential for reversing motor applications and multi-source power transfers where interlocking logic is required to prevent phase-to-phase shorts. The C321KM30 interlock features high-impact thermoplastic construction and precision-aligned slide mechanisms to provide a reliable physical barrier that maintains contactor timing and sequencing. It is compatible with Eaton CN15 and AN16 starter series, allowing for seamless integration into existing IEC and NEMA motor control centers. Whether you are performing a field conversion or replacing a worn side-mount interlock, this component ensures strict adherence to safety protocols in industrial automated systems and HVAC motor control panels.
Key Benefits for Technicians:
- Universal Compatibility: Designed specifically for Freedom Series starters ranging from NEMA Size 00 through Size 2.
- Mechanical Safety: Provides a robust physical lockout to prevent simultaneous energization in reversing contactor setups.
- Easy Installation: Facilitates quick field mounting between two adjacent contactors without complex modifications.
- Durable Construction: Built to withstand the high-cycle demands of industrial motor control circuits.
Common Technical Questions:
Will the C321KM30 work with NEMA Size 3 starters?
No, this specific model is engineered for NEMA Sizes 00, 0, 1, and 2. Larger frame sizes require the C321KM60 or similar heavy-duty interlocks.
Does this interlock include electrical auxiliary contacts?
The C321KM30 is a mechanical interlock only. If electrical interlocking is required for your logic circuit, you must install additional auxiliary contact blocks.
Can I use this for vertical mounting?
This unit is specifically designed for horizontal mounting. Vertical configurations typically require a different interlocking kit to account for gravity and mechanical leverage.
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
The Eaton Cutler-Hammer C321KM30 Mechanical Interlock is a critical field-installable accessory designed for Freedom Series NEMA size 00, 0, 1, and 2 starters and contactors. Engineered for horizontal mounting configurations, this heavy-duty mechanical link ensures positive electrical isolation by preventing two opposing contactors from closing simultaneously. This hardware is essential for reversing motor applications and multi-source power transfers where interlocking logic is required to prevent phase-to-phase shorts. The C321KM30 interlock features high-impact thermoplastic construction and precision-aligned slide mechanisms to provide a reliable physical barrier that maintains contactor timing and sequencing. It is compatible with Eaton CN15 and AN16 starter series, allowing for seamless integration into existing IEC and NEMA motor control centers. Whether you are performing a field conversion or replacing a worn side-mount interlock, this component ensures strict adherence to safety protocols in industrial automated systems and HVAC motor control panels.
Key Benefits for Technicians:
- Universal Compatibility: Designed specifically for Freedom Series starters ranging from NEMA Size 00 through Size 2.
- Mechanical Safety: Provides a robust physical lockout to prevent simultaneous energization in reversing contactor setups.
- Easy Installation: Facilitates quick field mounting between two adjacent contactors without complex modifications.
- Durable Construction: Built to withstand the high-cycle demands of industrial motor control circuits.
Common Technical Questions:
Will the C321KM30 work with NEMA Size 3 starters?
No, this specific model is engineered for NEMA Sizes 00, 0, 1, and 2. Larger frame sizes require the C321KM60 or similar heavy-duty interlocks.
Does this interlock include electrical auxiliary contacts?
The C321KM30 is a mechanical interlock only. If electrical interlocking is required for your logic circuit, you must install additional auxiliary contact blocks.
Can I use this for vertical mounting?
This unit is specifically designed for horizontal mounting. Vertical configurations typically require a different interlocking kit to account for gravity and mechanical leverage.
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.
