General Electrics TQD32150ST1 - 150 A, 3-Pole Bolt-On Circuit Breaker | AmpState

General Electrics TQD32150ST1 delivers dependable, high-current protection for three-phase electrical systems with a bolt-on mounting that locks the breaker firmly to the panel bus, delivering a vibration-resistant connection you can trust in challenging environments. What makes this 150A, 3-pole breaker stand out? It combines a rugged bolt-on design with a Thermal-Magnetic trip unit, giving you stable, repeatable protection across a wide range of loads. The thermal element handles normal and overload conditions with predictable delay, while the magnetic element snaps into action for short-circuit events, reducing damage and downtime. This means fewer nuisance trips and more reliable service for critical circuits.

• Secure bolt-on mounting provides a rigid, vibration-resistant bus connection—crucial for panelboards in busy mechanical rooms or space-constrained installations.
• Thermal-magnetic trip unit delivers stable protection: precise overload protection with a fast magnetic trip for short circuits, ensuring consistent performance over time.
• 3-pole design shields 3-phase circuits, balancing protection across all lines and simplifying integration in commercial and industrial architectures.
• OEM-compatible with matching General Electrics load centers and panelboards, streamlining replacement, upgrades, or retrofit projects.
• Versatile applications suitable for residential, commercial, and light industrial environments where reliable branch-circuit protection is essential.

How it protects your electrical system

The combination of thermal and magnetic tripping keeps your electrical backbone safe under a variety of conditions. In everyday operation, the thermal element responds gradually to overloads, allowing normal inrush and transient surges to pass without tripping. When a short circuit occurs, the magnetic element delivers an instantaneous trip, interrupting the fault quickly to minimize damage,arc flash exposure, and equipment downtime. The result is predictable, repeatable protection that partners well with standard panelboard architectures.

Ideal use cases

• Feeding critical branch circuits in residential panels where 3-phase distribution is present or required for certain equipment.
• Commercial electrical rooms and small-to-midsize facilities needing robust 150 A protection for motors, fans, and HVAC feeders.
• Light industrial panels requiring reliable, three-pole protection in a compact, bolt-on form factor.
• Retrofits and replacements in OEM GE load centers where seamless compatibility matters for uptime and serviceability.

Installation and compatibility

Designed for bolt-on mounting, this breaker aligns with standard GE panelboard and load-center bus assemblies, delivering a secure connection that resists vibration and movement. It is expressly intended for use as a branch circuit overcurrent and short-circuit protector, helping you maintain panel integrity and fault-clearance performance. When selecting this unit, verify that the panel is compatible with the GE TQD family and that the overall system amperage and conductor sizing meet applicable codes and manufacturer guidelines.

Technical specifications

• Manufacturer: General Electrics
• Part number: TQD32150ST1
• Type: Thermal-magnetic molded case circuit breaker
• Amperage rating: 150 A
• Number of poles: 3
• Mounting style: Bolt-on
• Application: Branch circuit overcurrent and short-circuit protection

When you’re configuring or upgrading panelboards and load centers, the General Electrics TQD32150ST1 150A, 3-pole bolt-on circuit breaker brings proven, reliable protection to every phase. Its rugged mounting, stable trip characteristics, and OEM compatibility translate to fewer compatibility headaches and quicker, more predictable protection for your electrical infrastructure. Add this trusted three-phase breaker to your order and experience consistent performance across residential, commercial, and light industrial applications.