Siemens MBKQJ1225 225A 2-Pole Panelboard Sub-Feed Breaker Kit

Siemens · Industrial Automation & Electrical

Description  The Siemens MBKQJ1225 panelboard kit is a 225A, 2-pole sub-feed circuit breaker assembly designed for Siemens P1 panelboard distribution systems. Engineered with thermal magnetic trip protection and bolt-on mounting, it provides reliable feeder protection and branch power distribution in commercial electrical installations.     Technical Specifications  Condition New/Never Used Surplus Brand Siemens Category Circuit Breakers Part Number MBKQJ1225 Subcategory Panelboard Breaker Kits Series MBK Product Type Panelboard Sub-Feed Breaker Kit Current Rating 225A Voltage Rating 240VAC Pole Configuration 2-Pole Phase Configuration Single Phase Interrupt Rating 10kA @ 240VAC Mounting Style Bolt-On Terminal Type Lugs Compatible Panelboards Siemens P1 Panelboards Trip Technology Thermal Magnetic Trip Function Long-Time and Instantaneous (LI) Trip Adjustability Fixed Thermal, Fixed Magnetic Wire Range 6 AWG–300 kcmil (Cu), 4 AWG–300 kcmil (Al) Maximum Wire Size 300 kcmil Minimum Wire Size 6 AWG Available Options Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch, Padlock Attachment Included Accessories Mounting Hardware, Breaker, Lugs Standards UL 489, CSA C22.2 Approvals UL, CSA Temperature Rating 40°C Construction Features Main Breaker Kit, 10kA Interrupt Rating Weight 6 lb     Information About MBKQJ1225 The MBKQJ1225 is a Siemens MBK series main breaker and sub-feed panelboard kit developed for single-phase 240VAC electrical distribution applications. Designed for use with Siemens P1 panelboards, the assembly incorporates a 2-pole thermal magnetic circuit breaker with fixed long-time and instantaneous trip protection characteristics. The breaker supports conductor sizes ranging from 6 AWG to 300 kcmil copper and 4 AWG to 300 kcmil aluminum, providing installation flexibility in commercial and industrial feeder systems. Built to UL 489 and CSA C22.2 standards, the kit supports dependable overcurrent protection and structured panelboard distribution integration. Key Features: 225A Current Rating: Designed for medium-capacity feeder and panelboard distribution applications. 2-Pole Breaker Configuration: Supports single-phase 240VAC electrical systems. Thermal Magnetic Protection: Combines overload and short-circuit protection functionality. Bolt-On Mounting Design: Provides secure breaker installation within Siemens P1 panelboards. LI Trip Functionality: Features long-time and instantaneous trip protection characteristics. Wide Wire Compatibility: Supports copper and aluminum conductors up to 300 kcmil. Included Installation Components: Supplied with mounting hardware, breaker, and lugs. UL and CSA Approved: Manufactured to UL 489 and CSA C22.2 certification standards. The MBKQJ1225 delivers the reliability and precision required for panelboard feeder protection and commercial electrical distribution applications.

Brand: Siemens · Category: Industrial Automation & Electrical

Key features

• 225A Current Rating: Designed for medium-capacity feeder and panelboard distribution applications.
• 2-Pole Breaker Configuration: Supports single-phase 240VAC electrical systems.
• Thermal Magnetic Protection: Combines overload and short-circuit protection functionality.
• Bolt-On Mounting Design: Provides secure breaker installation within Siemens P1 panelboards.
• LI Trip Functionality: Features long-time and instantaneous trip protection characteristics.
• Wide Wire Compatibility: Supports copper and aluminum conductors up to 300 kcmil.
• Included Installation Components: Supplied with mounting hardware, breaker, and lugs.
• UL and CSA Approved: Manufactured to UL 489 and CSA C22.2 certification standards.

Specifications

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