8538SBG12 - Square D Combination Starter

8538SBG12 - Square D Combination Starter

If you’re looking for a reliable way to start and protect your motor, the Square D 8538SBG12 Combination Starter is a smart choice. Schneider Electric designed this unit to meet strict NEMA standards, so you can count on it in demanding industrial or commercial environments. What makes it so useful is that it combines short-circuit protection, overload protection, and a fusible disconnect all in one compact enclosure. That means less wiring, less space used, and more peace of mind.

With its 30-amp Class H fusible disconnect, melting alloy overload relay, and 110–120 VAC coil, this starter is a solid fit for motors up to 3 HP at 230 volts or 5 HP at 600 volts. The steel NEMA 1 enclosure gives it the toughness needed for everyday use while still fitting neatly into panels with limited space. Whether you’re outfitting HVAC systems, running pumps and conveyors, or replacing an older starter, the 8538SBG12 delivers dependable performance you can trust.

Key Features and Benefits

• All-in-one design – Combines overload and short-circuit protection with a fusible disconnect.
• Built-in safety – 30 A Class H fuse clips guard against dangerous electrical faults.
• Motor protection that lasts – Melting alloy overload relay helps prevent damage from long-term overcurrent.
• Ready for standard control circuits – 110–120 VAC coil supports 50/60 Hz applications.
• Practical motor ratings – Handles motors up to 3 HP at 230 V and 5 HP at 600 V.
• Space-saving steel enclosure – NEMA 1 rated, painted, and sized for tight control panels.
• Expandable – Compatible with Square D Type S accessories for added flexibility.

Technical Specifications

• Starter Type: Type S fusible combination starter
• NEMA Size: 0
• Poles: 3-pole
• Fusing: Class H, 30 A fuse clips
• Overload Protection: Melting alloy thermal units (Type B)
• Control Coil Voltage: 110–120 VAC, 50/60 Hz
• Motor Rating: 3 HP @ 200–230 VAC; 5 HP @ 480–600 VAC
• Enclosure Type: NEMA 1, painted steel
• Dimensions: 22.50″ H × 9.50″ W × 8.34″ D

Material Compliance and Certifications

• UL Listed and CSA Certified for safety and reliability
• Meets NEMA standards for combination starters
• Durable steel housing for long-term use in indoor environments

Where It Works Best

This starter is made for situations where safety and space efficiency matter most. You’ll find it especially handy in:

• Commercial HVAC setups – For fans, blowers, and compressors
• Industrial processes – Running pumps, conveyors, or other motor-driven equipment
• OEM projects – Compact enough to fit neatly into custom-built panels
• Retrofit jobs – A great replacement option when updating older starters that no longer meet today’s standards