Overview
The Square D 8736-SAO16 B is a NEMA Size 00 reversing starter designed for industrial motor control applications requiring full voltage starting, stopping, and reversing capability. This Type S magnetic motor starter comprises two 8502S NEMA contactors with mechanical and electrical interlocking, paired with an integrated thermal overload relay for comprehensive motor protection. Rated for 600VAC operation, the unit features a 120V 50/60 Hz control coil wired for separate control, making it suitable for facilities with independent control power sources.
Key Features
- NEMA Size 00 compact footprint for space-constrained control panels
- Reversing configuration with mechanically and electrically interlocked contactors
- 3-pole, 9A overload relay with melting alloy thermal protection
- 600VAC power supply rated; 120V separate control coil
- UL listed and CSA certified for safety-critical installations
- Open enclosure design; compatible with standard NEMA mounting
Technical Specifications
| NEMA Size | 00 |
| Starter Type | Reversing (Type S) |
| Number of Poles | 3 |
| Horsepower @ 240V, 3-Phase | 1.5 HP |
| Horsepower @ 480V, 3-Phase | 2 HP |
| Operating Voltage (Power) | 600VAC, 50/60 Hz |
| Control Coil Voltage | 120VAC, 50/60 Hz (Separate Control) |
| Overload Relay Amperage | 3–9A (Class 10/20 Selectable) |
| Maximum SCCR | 5 kA (with UL508A protected circuit) |
| Enclosure Type | Open (no enclosure) |
| Dimensions (H × W × D) | 6.91″ × 7.13″ × 5.31″ |
| Certifications | UL 508, CSA, CSA C22.2 No. 14 |
Typical Applications
- Reversible AC motor control in pump and compressor systems
- Conveyor belt drive control with forward/reverse capability
- Machine tool spindle motor reversing circuits
- HVAC fan motor control with reversible operation
- Industrial process equipment requiring direction reversal
Compatibility & Replacements
Compatible With
- AC squirrel cage motors rated up to 2 HP (480VAC, 3-phase)
- 600VAC power distribution systems
- Standard NEMA control circuits and manual/automatic switching
- NEMA 4X and 7X control enclosures (panel-mount)
Replaces / Drop-In Replacement For
This unit is a direct replacement for original equipment applications specifying the 8736-SAO16 part number. Verify motor horsepower and voltage ratings before substitution. Consult your system integrator for non-identical part upgrades or substitutions.
Works With
- Square D thermal overload relay cartridges and thermal unit kits
- NEMA standard auxiliary contacts (Form 1NO available)
- Industrial control transformers for isolated 120V coil supplies
- Standard 600VAC molded case circuit breakers and disconnects
