100-A12ND3 | Allen-Bradley Contactor

The 100-A12ND3 is a 3-pole contactor used to control electrical circuits in industrial automation systems. It is ideal for managing three-phase loads such as motors, heating elements, and lighting systems. The contactor offers fast and reliable switching through electromagnetic coil actuation. It is part of Allen-Bradley's IEC-compliant contactor family. The unit includes one normally open contact and is suitable for general-purpose switching tasks. It ensures safe and efficient circuit control under moderate load conditions.

Yes, the contactor features DIN rail mounting, which simplifies installation and replacement. It clips onto standard DIN rails used in most control cabinets and enclosures. This reduces panel layout time and provides flexibility in system design. It can also be removed easily for maintenance without rewiring. DIN rail mounting is a major advantage in modular control architectures. It also supports multi-device stacking in compact areas.

This is an open-style contactor, meaning it does not come with an enclosure. It is designed to be installed inside a properly rated control panel or protective cabinet. The open-frame design allows better airflow and visibility for maintenance. It also facilitates attachment of accessories like overload relays or auxiliary blocks. However, it must be mounted in a safe environment. External enclosures should meet appropriate NEMA or IP standards for full protection.

The 100-A12ND3 is well-suited for motor control, resistive heating, and moderate inductive loads. It can handle pumps, fans, conveyors, and lighting arrays. Its design complies with IEC standards for utilization categories like AC-1 and AC-3. This ensures reliable performance across various industrial processes. The unit also integrates well with thermal overload relays. This supports coordinated motor protection and control.

No, the 100-A12ND3 is now discontinued and no longer in active production by Allen-Bradley. While some inventory may exist through third-party distributors, Rockwell Automation no longer lists it in current catalogs. Customers are encouraged to update systems to maintain long-term supportability. For reliability and spare part access, using an active replacement is recommended. Always verify lifecycle status with Rockwell’s online tools.

The most suitable replacement for the 100-A12ND3 is from the Allen-Bradley 100-C series, such as the 100-C12ND3. This newer model offers improved electrical and mechanical performance while maintaining the same 12 A rating and 110/120V AC coil. The 100-C series also supports DIN rail mounting and compact dimensions, making retrofit easy. It offers better integration with modern accessories and digital control systems. Always compare coil voltage, current rating, and pole configuration before replacing. The Product Compatibility and Download Center (PCDC) provides verified substitution guidance.