Hubbell OT2M Circuit Breaker, 20A, 2-Pole, 277V

The Hubbell OT2M Circuit Breaker is a rugged, industrial-grade protection device designed for reliability in service, maintenance, and replacement projects. With a 20 A rating, 2-pole configuration, and 277 V operation, it safeguards demanding commercial and light industrial circuits while simplifying compatibility checks through the exact part number OT2M.

• 2-pole safety and isolation—disrupts both hot legs simultaneously for complete circuit disconnection, improving safety and meeting common industrial protection requirements.
• 277 V compatibility—optimized for commercial/industrial distribution environments where 277 V circuits power lighting, controls, and equipment.
• Precise compatibility verification—use the part number OT2M to confirm fit with your panel and application specifics, reducing downtime from incorrect replacements.
• Reliability for maintenance and replacement—a dependable, drop-in component that aligns with standard industrial electrical practices, making it a practical choice for service trucks and repair jobs.
• Stock- and field-friendly—known part number simplifies ordering, stocking, and quick swaps during critical maintenance windows.

Who this is for—electricians, facilities managers, and maintenance teams replacing worn breakers or upgrading panels in warehouses, manufacturing facilities, and other commercial/industrial settings that run 277 V circuits.

Ideal use cases—replacing a failed breaker in an existing 277 V distribution circuit, performing routine maintenance on electrical panels, or stocking a reliable spare for quick service restores in the field.

How this compares to alternatives—instead of generic, low-specification breakers, the OT2M offers an exact-match option from Hubbell designed for industrial service needs and verified by part number, helping you avoid fitment issues and non-compliant alternatives.

Practical tips for installers—before installation, confirm the panel’s compatibility using the OT2M part number, verify voltage and amperage alignment with the circuit, and ensure the replacement matches the panel’s bus configuration and enclosure rating. If you’re unsure about fit or suitability for a specific application, send a message with your panel details and the OT2M part number, and we’ll help verify compatibility.

Specifications

• Manufacturer: Hubbell
• Product Type: Circuit Breaker
• Amperage (A): 20
• Poles: 2
• Voltage: 277V
• Part Number: OT2M

Use the OT2M for trusted, industry-standard protection in your electrical distribution. If you need confirmation on compatibility with your equipment or panel, reach out and we’ll assist with precise validation to keep your project on schedule.