Overview
The Square D 8501-D0-42 is a general-purpose control relay part of the Class 8501 series, engineered for reliable switching in industrial control circuits. The 8501 series is a proven, industry-standard relay family built for multi-pole switching applications at various voltage levels. This specific model is ideal for control system designers and maintenance technicians seeking dependable relay performance in OEM and aftermarket applications.
Key Features
- Class 8501 proven reliability with decades of field deployment
- Multi-pole switching capability for flexible control circuit design
- Compact plug-in design with standardized terminal arrangements
- Compatible with Square D 8501NR series relay sockets for DIN rail or panel mounting
- UL and CSA listed for safety-critical industrial applications
- Operates across standard industrial voltage ranges (AC and DC options)
Technical Specifications
- Manufacturer: Square D (Schneider Electric)
- Series: Class 8501
- Model: 8501-D0-42
- Product Type: General Purpose Control Relay
- Mounting: Plug-in Socket (8501NR series socket required)
- Terminal Style: Screw Clamp or Spade (per socket selection)
- Contact Rating: 10 A at rated voltage (socket dependent)
- Voltage Ratings: 120VAC, 240VAC, or 28VDC (per voltage code suffix)
- Operating Temperature: -45°C to +70°C
- Pickup Time: Typically 13 ms
- Dropout Time: 6 ms maximum
- Certifications: UL Listed (E42240), CSA Approved, CE Marked, RoHS Compliant
Typical Applications
- Control circuit switching in manufacturing equipment
- HVAC system motor start/stop logic
- Alarm and notification circuits
- Machine tool interlocks and safety circuits
- Industrial automation signal routing
- Replacement in legacy control panels (maintains compatibility with installed 8501NR sockets)
Compatibility & Replacements
Compatible With
- Square D Class 8501 relay sockets (8501NR series)
- Standard industrial control circuits and panel layouts
- DIN rail and panel-mounted electrical enclosures
- Legacy Square D control systems built with 8501-series relays
Replaces / Drop-In Replacement For
- Other Square D 8501-D0-42 units requiring equivalent performance
- Compatible with systems originally specified for 8501 Type D relays with “42” configuration
- Verify compatibility with your system integrator or original equipment documentation before ordering
Works With
- Square D 8501NR relay sockets (8 pin, DIN rail/panel mount)
- Screw clamp and spade terminal configurations
- Standard industrial control wiring and terminal blocks
- AC and DC control circuits (voltage-specific units)
