Overview
The Square D 2510MBO2 is a 3-pole, 18-amp manual motor starter designed for manual on/off control and overload protection in industrial motor applications. This NEMA M0 integral horsepower starter provides reliable, straightforward motor control without complex automation, making it ideal for small AC motors rated up to 5 HP at 380/575 VAC or 3 HP at 200/230 VAC.
Key Features
- 3-pole configuration with 18-amp current rating for versatile three-phase applications
- Pushbutton operator for manual on/off control with easy field operation
- Thermal melting alloy overload relay provides automatic motor protection against overcurrent
- Pressure wire clamp terminals accept 14 to 8 AWG copper wire for reliable connections
- Lockable in off/stop position to prevent inadvertent motor restart
- Pilot lights and auxiliary contacts field-addable for expanded functionality
Technical Specifications
- Voltage Rating: 600 VAC / 250 VDC maximum
- Current Rating: 18 amperes
- Poles: 3-pole, three-phase
- Horsepower: 5 HP at 380/575 VAC; 3 HP at 200/230 VAC
- Control Type: Manual pushbutton, non-reversing
- Overload Protection: Thermal melting alloy units (ordered separately to match motor)
- Enclosure: NEMA 1 surface-mount painted steel
- Dimensions: 8.63 in H × 5.00 in W × 4.13 in D
- Weight: 4.14 lbs
- Wire Termination: Pressure wire clamp (14–8 AWG copper)
- Certifications: UL Listed, CSA Certified, CE Marked
Typical Applications
The Square D 2510MBO2 is widely used in small industrial machinery, HVAC equipment, pumps, fans, conveyors, and small machine tools where low-cost, dependable manual motor control is required. Its compact NEMA 1 enclosure and rugged construction make it suitable for workshops and manufacturing environments where low-voltage protection is not mandatory.
Compatibility & Replacements
Compatible With
- Three-phase AC motors up to 5 HP (at 380/575 VAC) or 3 HP (at 200/230 VAC)
- Standard 600 VAC three-phase power distribution systems
- Industrial control panels and enclosures with NEMA mounting compatibility
- Pressure wire clamp terminal systems using 14–8 AWG copper conductors
Replaces / Drop-In Replacement For
- Square D 2510MBO (non-numbered variant)
- Earlier Square D 2510 series 3-pole manual starters with equivalent NEMA M0 ratings
- Verify compatibility with your system integrator before ordering for critical applications.
Works With
- Standard industrial three-phase AC power supplies (380 V, 400 V, 460 V, 575 VAC)
- Thermal overload heater elements ordered separately per motor nameplate data
- Field-installable pilot light indicators and auxiliary contact modules
- Manual reset and lockable control mechanisms for industrial safety protocols
