Overview
The Allen-Bradley 100-C43D00 is a compact IEC contactor designed for controlling motors and industrial loads. This unit includes a 100-S Series B auxiliary contact block pre-installed, providing additional flexibility for control logic and signaling. The contactor features a 110/120V AC coil and three normally open main poles, making it ideal for direct-on-line motor starting and general load switching applications.
Key Features
- 43A current rating at AC-3 utilization (85A at AC-1), suitable for motors up to 20–30 HP
- Three normally open poles with screw-type terminals for reliable motor connections
- 110/120V AC coil rated for 50/60 Hz operation at 230–690 VAC
- 100-S auxiliary contact block (Series B) pre-installed for status signaling and control interlocking
- Compact design with DIN rail and base/panel mounting options for space-saving installation
- Positively guided auxiliary contact design for high contact reliability across voltage ranges
Technical Specifications
- Current Rating: 43 A (AC-3 at 400V), 85 A (AC-1)
- Coil Voltage: 110/120 VAC, 50/60 Hz
- Operational Voltage Range: 230–690 VAC at 50 Hz; 115–575 VAC at 60 Hz
- Main Poles: 3 Normally Open
- Auxiliary Contact Block: 100-S Series B (1 N.O. contact included)
- Power Rating: 22 kW
- Terminal Type: Screw terminals
- Mounting Options: DIN rail or base/panel mount
- Frequency: 50/60 Hz
- Certifications: UL, CSA, CUL, CE, CCC, KC, GOST, C-TICK
Typical Applications
The Allen-Bradley 100-C43D00 is widely used in motor control centers (MCCs), HVAC systems, machine tool control, pump and fan motor switching, and general industrial automation. The auxiliary contact block enables remote status indication, interlock circuits, and soft-start logic coordination. Common applications include:
- Induction motor starting and stopping
- Three-phase load switching in industrial machinery
- Compressor and pump control in HVAC and process systems
- Overload protection circuit coordination with contactor status feedback
Compatibility & Replacements
Compatible With
- Allen-Bradley 100-S auxiliary contact blocks (Series A and Series B)
- Standard 110/120V AC coil interface modules and electronic timers
- DIN rail and panel-mounted motor control systems
- IEC-standard motor protection relays and overload devices
Replaces / Drop-In Replacement For
- Allen-Bradley 100-C43*00 series without auxiliary contacts
- Other 100-C43 variants requiring 43A, 3-pole IEC contactor configuration
- Legacy Bulletin 100 contactors in similar amp and coil voltage classes
Works With
- 100-S Series A and Series B auxiliary contact blocks
- Interface modules and electronic protection devices rated for 110/120V coil operation
- Standard DIN-rail mounting systems and enclosure frames
- Allen-Bradley motor control and automation ecosystems
