Overview
The Potter & Brumfield P40P42D12P1-24 is a 3-pole definite purpose magnetic contactor engineered for reliable switching in industrial automation, motor control, and power distribution systems. Manufactured by TE Connectivity, this contactor operates at 600VAC with a 24VDC coil and delivers 50A resistive load capacity, making it suitable for a wide range of AC and DC control applications.
Key Features
- 3-pole, 3PST-NO (Form X) contact configuration with silver-cadmium oxide contacts for dependable switching
- 600VAC maximum switching voltage with 50A resistive / 40A inductive load rating
- 24VDC coil with 84 Ω coil resistance and 286 mA nominal coil current
- Chassis mount with 8-32 screw terminals and 0.250-inch quick-connect coil terminals
- Operating temperature range -55°C to +65°C; must-operate voltage 18VDC minimum
- No auxiliary switch; compact design suitable for panel and control cabinet mounting
Technical Specifications
This contactor conforms to definite purpose design standards for AC and DC coil actuation. The P40 series is known for robust mechanical and electrical durability in demanding industrial environments.
Typical Applications
- Three-phase AC motor starting and stopping control
- Industrial automation and process control systems
- HVAC and refrigeration compressor control
- Lighting and power distribution switching
- DC circuit switching and overload protection
Compatibility & Replacements
Compatible With
- Three-phase AC motor control circuits (230V, 460V, 600V systems)
- DC control and switching applications requiring 24VDC coil actuation
- Standard industrial control panels and NEMA enclosures
- Manual and programmable logic controller (PLC) switched control circuits
Replaces / Drop-In Replacement For
- P40P42D12P1-12 (12VDC coil variant — not a direct substitute without coil voltage adjustment)
- P30P42D12P1-24 (30A lower-capacity version of same series)
- TE Connectivity / Potter & Brumfield P40 series equivalents with identical coil voltage and contact configuration
Works With
- Standard 24VDC control power supplies and UPS systems
- Manual motor starters and soft-starter control circuits
- Programmable Logic Controllers (PLCs) with 24VDC relay outputs
- Automation platforms: Siemens TIA Portal, Rockwell Studio 5000, Mitsubishi GX Works
- Standard 24VDC interposing relays and control logic modules
