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Hubbell OTA1M - 15A 1-Pole Circuit Breaker (120/240VAC)

Hubbell
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The Hubbell OTA1M is a single-pole, thermal-magnetic circuit breaker designed for branch circuit protection in industrial and commercial power distribution systems. It is rated for 120/240 VAC at 15 amps, with a 10 kAIC interrupting capacity to handle fault currents safely. This compact unit features a 1-inch frame size, a plug-in mounting style for panelboards, and weighs 5.19 lb, constructed with durable thermoplastic insulation rated for 60/75°C. The breaker complies with UL 489 and CSA C22.2 standards, ensuring reliable overcurrent and short-circuit protection. Typical applications include lighting panels, motor control centers, and general-purpose load centers in manufacturing facilities and commercial buildings.

Key Features & Specifications
  • Type: Thermal-magnetic circuit breaker, single-pole, plug-in mounting
  • Voltage Rating: 120/240 VAC
  • Current Rating: 15 A
  • AIC Rating: 10 kAIC at 240 VAC
  • Dimensions: 1-inch frame width, standard 3-inch depth
  • Standards: UL 489, CSA C22.2
  • Applications: Branch circuit protection in panelboards, lighting panels, motor control centers
  • Switch Type: Toggle handle
  • Configuration: Single-pole, 120/240 VAC
  • Coil Voltage Maximum: Not applicable (thermal-magnetic)
  • Temp Rating: 60/75°C
  • Shipping Dimensions: 3.5 x 2.5 x 4.5 inches (approx.)
  • Phase: Single-phase
  • Voltage: 120/240 VAC
  • Amperage: 15 A
  • Connection: Plug-in (load side), line side via bus
  • Poles: 1
  • Protection: Overcurrent and short-circuit
  • Functions: Thermal-magnetic trip
  • Frame Size: 1-inch
  • Trip Type: Thermal-magnetic
  • Panel Type: Load center or panelboard
  • Breaker Type: Molded case (MCB)
  • Control Voltage Minimum: Not applicable
  • Control Voltage Maximum: Not applicable
  • MCM Size: Not applicable
  • Metal Type: Copper alloy contacts
  • Panel Style: Flush or surface mount
  • Bus Type: Plug-on
  • Fuse Class: Not applicable
  • Insulation Temperature: 60/75°C
  • Inductance: Not applicable
  • Impedance: Not applicable
  • Barrels: Not applicable
  • Class Rating: Not applicable
  • Diameter: Not applicable
  • Velocity: Not applicable
  • Clip Center: 1.5 inches (approx.)
  • Clas: Not applicable
  • Mounting: Plug-in
  • Hz: 50/60 Hz
  • Coil Material: Not applicable
  • Horse Power: 0.5 HP at 120 VAC, 1.5 HP at 240 VAC
  • Aux Contacts: Not available
  • CPT: Not applicable
  • Full Load Amps: 15 A
  • Dist Voltage: 120/240 VAC
  • Bucket Size: Not applicable
  • Bucket Style: Not applicable
  • Bucket Type: Not applicable
  • Full Load Amp Maximum: 15 A
  • Full Load Amp Minimum: 0 A
  • Enclosure: Open (no enclosure)
  • Relay Style: Not applicable
  • Coil Voltage Minimum: Not applicable
  • Wire: 14 AWG to 8 AWG (copper)
  • Amperage Maximum: 15 A
  • Amperage Minimum: 0 A
  • Nema Rating: Not applicable
  • Switch Style: Toggle
  • Wire Size: 14 AWG to 8 AWG
  • Certification: UL 489, CSA
  • Circuit Breaker Mounting Style: Plug-in
  • Terminal Connection: Screw terminals (load side)
  • Frequency Rating: 50/60 Hz
  • Phase Connection: Single-phase
  • Standards: UL 489, CSA C22.2
  • Compatible Frames: Hubbell load centers
  • Installation Type: Plug-in
  • Item QTY: 1
  • Nema Starter Size: Not applicable
  • Breaker Frame: 1-inch
  • Current Rating: 15 A
  • Reverse Standoff Voltage: Not applicable
  • Watts: Not applicable
  • Peak Pulse Current: Not applicable
  • Breakdown Voltage (MIN VBR@IT ) (V): Not applicable
  • Breakdown Voltage (VBR@IT) (V): Not applicable
  • Polarity: Not applicable
  • Operating Temperature Maximum Celsius: 40°C ambient
  • Max Clamp Voltage: Not applicable
  • On-State Current: Not applicable


Product Identification
  • UPC: 78393648082
  • GTIN: 00783936480824