MBK175 Siemens 175A 2-Pole Main Circuit Breaker Kit for Type EQ Load Centers

MBK175 Siemens 175A 2-Pole Main Circuit Breaker Kit for Type EQ Load Centers

Pulling a tired main or adding one to a Siemens Type EQ main-lug panel? The MBK175 is the part you reach for. It is a 175A, 2-pole main circuit breaker at 120/240V with a 22 kAIC interrupting rating, and it ships with the mounting hardware to set it as the main in a compatible EQ load center. This is the EQ9684 main, so it drops in as a direct replacement on legacy EQ-series panels.

It runs a thermal-magnetic trip on a plug-in connection and takes up four single-pole spaces on the bus. One check before you order: this fits the older Type EQ panels only. It will not fit Ultimate, ES, or PL series load centers, so read the panel wiring diagram first.

Common Applications

• Replacing a failed EQ9684 main on a legacy load center
• Converting a Siemens Type EQ main-lug panel to a main-breaker panel
• 175A main disconnect at 120/240V single-phase
• Service work on older Siemens, ITE, and Gould panels

Key Features

• Direct EQ9684 replacement: Drops in as the 175A main on compatible EQ panels.
• Comes with the hardware: Includes the mounting kit to set it as the main, no extra parts to chase.
• Plug-in mount: Snaps onto the Type EQ bus.
• Thermal-magnetic trip: Handles overloads and short circuits.
• UL 489 listed: Rated for main overcurrent duty.

Specifications

• Manufacturer: Siemens
• Catalog Number: MBK175 (EQ9684 main)
• Type: Main circuit breaker kit, Type EQ
• Amperage: 175A
• Poles: 2 (uses four single-pole spaces)
• Phase: Single-phase
• Voltage: 120/240V AC
• Interrupting Rating: 22 kAIC at 240V
• Trip Type: Thermal-magnetic
• Connection: Plug-in
• Standard: UL 489

Product Identification

• Dimensions: 5.25 in x 3.25 in x 4.05 in
• Weight: 3 lb
• UPC: 662643673937

FAQ

What panels does the MBK175 fit? Legacy Siemens Type EQ main-breaker load centers that accept the EQ9684 main. It does not fit Ultimate, ES, or PL panels.

Is this a breaker or a kit? Both - it is a 175A 2-pole main circuit breaker supplied with the mounting hardware to install it as the main in a compatible Type EQ load center.

How many spaces does it take? Four single-pole spaces on the bus.

Will it replace a bad EQ9684 main? Yes, it is the direct EQ9684 main replacement for EQ-series panels.

What is the interrupting rating? 22 kAIC at 240V AC.