GE TEY330ST12 - 30 A, 480 V, 3-Pole Bolt-On Circuit Breaker | AmpState

Engineered for reliability in commercial and light industrial environments, the GE TEY330ST12 is a 30‑amp, 480‑volt, 3‑pole bolt‑on molded‑case circuit breaker that protects branch circuits from overload and short circuits. Its robust design and precise trip technology make it a dependable choice for panelboards and loadcenters where uptime matters.

Why this breaker stands out

• Secure bolt‑on mounting: A rigid bus connection that resists vibration and maintains consistent electrical contact in demanding installations.
• Thermal‑magnetic trip unit: Combines overcurrent (thermal) and short‑circuit (magnetic) protection for stable, repeatable performance across temperature changes and load conditions.
• Three‑pole, 480V operation: Designed specifically for three‑phase systems, delivering balanced protection across all conductors in 480V networks.
• OEM‑compatible: Engineered to pair with matching GE OEM load centers and panelboards for straightforward, reliable installations.
• Versatile for various sectors: Ideal for residential, commercial, and light industrial applications where dependable main or branch circuit protection is needed.

Technical specifications

• Manufacturer: GE
• Part number: TEY330ST12
• Type: Thermal‑magnetic molded case circuit breaker
• Amperage rating: 30 A
• Voltage rating: 480 V
• Number of poles: 3
• Mounting style: Bolt‑on
• Application: Branch circuit overcurrent and short‑circuit protection

Use cases and scenarios

Install the TEY330ST12 in electrical panels that feed 3‑phase equipment and motors operating at 480 V. It’s well suited for factory floor motor feeds, HVAC equipment, data centers’ power distribution, and service panels in mid‑sized facilities. When you need predictable tripping behavior under varied loads and temperatures, this breaker’s thermal‑magnetic design delivers consistent performance, reducing nuisance trips and protecting expensive equipment.

Installation and compatibility tips

• Verify panelboard compatibility with GE TEY series breakers to ensure a clean shelter and bus connection.
• Use the correct bolt‑on mounting hardware and torque specifications to maximize vibration resistance and electrical contact.
• Coordinate with upstream protection and load calculations to ensure the 30 A rating aligns with circuit wiring and device protection strategy.
• Keep spare TEY330ST12 units on hand for quick replacements to minimize downtime in critical systems.