Default product image

Westinghouse MA3450 - Molded Case 450A 600V 3-Pole Breaker

Westinghouse
Price
Save $-2,619.11
/
Condition
  • In stock, ready to ship
  • Backordered, shipping soon
Call for Price
Westinghouse MA3450 is a 3-pole molded case circuit breaker designed for reliable overload and short-circuit protection in industrial and commercial electrical systems. This thermal magnetic breaker is rated for 450A at 600VAC with a 30kA interrupting capacity at 480VAC, featuring LI (Long-Time and Instantaneous) trip functions for precise fault response. The unit weighs 54 lb, uses a bolt-on connection, and is built on the HMA frame with dimensions of 8.25 inches wide by 16.00 inches long by 4.00 inches deep. It complies with applicable industry standards for 40°C rated operation and includes load-side terminals for straightforward installation. Typical applications include heavy-duty power distribution in manufacturing facilities, commercial buildings, and industrial machinery requiring robust circuit protection.

Key Features & Specifications
  • Type: Molded Case
  • Family: MA Series
  • Amperage: 450A
  • Voltage Rating: 600V
  • Poles: 3
  • Phase: 3
  • Interrupting Rating: 30kA @ 480VAC
  • Frame Type: HMA
  • Trip Unit: Thermal Magnetic
  • Functions: LI - Long-Time and Instantaneous
  • Mounting Type: Bolt-On
  • Connection: Bolt-On
  • Weight: 54 lb
  • Dimensions: 8.25"W x 16.00"L x 4.00"D
  • Load-Side Terminals Included
  • Operating Temperature: 40°C Rated