Siemens MD63T600 Trip Unit – Sentron Series – 600A – 3 Pole – 600VAC – Thermal Magnetic – MD/HMD Compatible

The Siemens MD63T600 is a Sentron Series molded case circuit breaker trip unit designed for use with Siemens MD and HMD frame breakers. Rated at 600A and 600VAC, this 3-pole thermal-magnetic trip unit provides dependable overload and short-circuit protection for industrial and commercial power distribution systems requiring high-capacity performance.

This trip unit features Long-Time and Instantaneous (LI) protection functions, delivering reliable response to sustained overload conditions and high-level fault currents. It is engineered for seamless integration into compatible MD and HMD frame circuit breaker assemblies, ensuring consistent protection and coordination in electrical distribution systems.

Built for demanding applications, the MD63T600 is UL listed and designed to support high-performance feeder and main breaker configurations in critical electrical infrastructure.

Specifications

• Brand: Siemens
• Part Number: MD63T600
• Series: Sentron Series
• Type: Trip Unit / Programmer
• Frame Compatibility: MD / HMD Frame
• Category: Molded Case Circuit Breaker Trip Unit
• Configuration: 3 Pole
• Protection Type: Thermal Magnetic
• Trip Functions: LI – Long-Time and Instantaneous

Electrical Ratings

• Current Rating: 600A
• Voltage Rating: 600VAC
• Interrupting Capacity: 50kA @ 480VAC
• Interrupting Capacity: 25kA @ 600VAC

Construction

• Heavy-duty trip unit design
• Compatible with MD and HMD frame breakers
• Precision thermal-magnetic sensing system
• Plug-in style breaker integration (frame dependent)
• Industrial-grade durability for harsh environments

Functions

• Overload protection
• Short-circuit protection
• Long-time delay protection
• Instantaneous fault protection
• Coordinated breaker tripping performance

Dimensions

• Width: 9 in
• Height: 16 in
• Depth: 6 in

Standards

• UL Listed
• CSA Approved

Applications

• Industrial power distribution systems
• Commercial switchboards and panelboards
• Main and feeder breaker protection
• Heavy-duty electrical infrastructure
• Manufacturing facilities
• High-capacity electrical systems
• MD/HMD frame breaker assemblies

Returns are easy

You may return items within 30 days of delivery for a refund.

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