MBK125A | Siemens Type EQ Low Voltage 2-Pole 125A 120/240V Thermal Magnetic Main Breaker Kit
MBK125A | Siemens Type EQ Low Voltage 2-Pole 125A 120/240V Thermal Magnetic Main Breaker Kit
MBK125A | Siemens Type EQ Low Voltage 2-Pole 125A 120/240V Thermal Magnetic Main Breaker Kit
    MBK125A | Siemens Type EQ Low Voltage 2-Pole 125A 120/240V Thermal Magnetic Main Breaker Kit
MBK125A | Siemens Type EQ Low Voltage 2-Pole 125A 120/240V Thermal Magnetic Main Breaker Kit

MBK125A | Siemens Type EQ Low Voltage 2-Pole 125A 120/240V Thermal Magnetic Main Breaker Kit

Part #: MBK125A Manufactured by: Siemens
Regular price
$99.00
Sale price
$99.00
Regular price
4 in Stock
Condition: New-Surplus Original Box
Shipping calculated at checkout.
Product Overview
Plug-In - 125 Amp - 240 Volt
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IQElectro 2-Year Warranty
Warranty for Product #: MBK125A
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Original Manufacturer's Warranty Not Covered, This Product is SURPLUS.

Product Description P/N: MBK125A

Description / Specifications

DescriptionΒ 

The Siemens MBK125A is a molded case main breaker kit designed for low-voltage residential and light commercial panel conversions. Rated for 120/240 VAC operation with a 125-amp capacity, it provides dependable overcurrent protection and system isolation.


Β 

Technical SpecificationsΒ 

Condition New/Never Used Surplus
Brand Siemens
Category Circuit Breaker
Part Number MBK125A
Subcategory Molded Case Circuit Breaker
Type Type EQ Low Voltage
Voltage Rating 120/240 VAC
Amperage Rating 125 A
Interrupt Rating 22 kA @ 240 VAC
Trip Type Thermal Magnetic
Number of Poles 2
Phase 1
Mounting Type Bolt-On / Panel
Dimensions 5.6 in L Γ— 4.5 in W Γ— 3.7 in H
Application Main breaker conversion for residential/light commercial panels
Breaker Function Main Disconnect and Overcurrent Protection



Information About MBK125A

The MBK125A is a main breaker conversion kit developed by Siemens for Type EQ low-voltage panelboard applications. Supporting 125-amp operation at 120/240 VAC, it provides reliable system protection while enabling convenient upgrades or replacements in existing load centers. Its thermal magnetic trip characteristics ensure accurate response to both overloads and short-circuit conditions, helping maintain electrical safety in residential and commercial installations. With a 22 kA interrupt capacity at 240 VAC and a bolt-on/panel mounting configuration, the MBK125A integrates securely into compatible assemblies while offering durable and dependable protection capabilities.

Key Features

  • 125-amp main breaker: Supports residential and light commercial panel conversion needs.
  • Thermal magnetic trip: Delivers long-time overload and instantaneous short-circuit response.
  • 22 kA interrupt rating: Provides strong fault-clearing capability at 240 volts.
  • Type EQ compatibility: Designed specifically for Siemens low-voltage panel systems.
  • Bolt-on/panel mounting: Ensures secure installation and stable electrical connections.
  • Two-pole configuration: Supports single-phase power distribution applications.
  • Compact dimensions: Fits standard panel layouts with minimal adjustment.
  • Durable molded case construction: Engineered for long-term reliability in service environments.

The MBK125A delivers the reliability and precision required for safe, effective conversion and protection of single-phase low-voltage electrical panels.

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Description / Specifications

DescriptionΒ 

The Siemens MBK125A is a molded case main breaker kit designed for low-voltage residential and light commercial panel conversions. Rated for 120/240 VAC operation with a 125-amp capacity, it provides dependable overcurrent protection and system isolation.


Β 

Technical SpecificationsΒ 

Condition New/Never Used Surplus
Brand Siemens
Category Circuit Breaker
Part Number MBK125A
Subcategory Molded Case Circuit Breaker
Type Type EQ Low Voltage
Voltage Rating 120/240 VAC
Amperage Rating 125 A
Interrupt Rating 22 kA @ 240 VAC
Trip Type Thermal Magnetic
Number of Poles 2
Phase 1
Mounting Type Bolt-On / Panel
Dimensions 5.6 in L Γ— 4.5 in W Γ— 3.7 in H
Application Main breaker conversion for residential/light commercial panels
Breaker Function Main Disconnect and Overcurrent Protection



Information About MBK125A

The MBK125A is a main breaker conversion kit developed by Siemens for Type EQ low-voltage panelboard applications. Supporting 125-amp operation at 120/240 VAC, it provides reliable system protection while enabling convenient upgrades or replacements in existing load centers. Its thermal magnetic trip characteristics ensure accurate response to both overloads and short-circuit conditions, helping maintain electrical safety in residential and commercial installations. With a 22 kA interrupt capacity at 240 VAC and a bolt-on/panel mounting configuration, the MBK125A integrates securely into compatible assemblies while offering durable and dependable protection capabilities.

Key Features

  • 125-amp main breaker: Supports residential and light commercial panel conversion needs.
  • Thermal magnetic trip: Delivers long-time overload and instantaneous short-circuit response.
  • 22 kA interrupt rating: Provides strong fault-clearing capability at 240 volts.
  • Type EQ compatibility: Designed specifically for Siemens low-voltage panel systems.
  • Bolt-on/panel mounting: Ensures secure installation and stable electrical connections.
  • Two-pole configuration: Supports single-phase power distribution applications.
  • Compact dimensions: Fits standard panel layouts with minimal adjustment.
  • Durable molded case construction: Engineered for long-term reliability in service environments.

The MBK125A delivers the reliability and precision required for safe, effective conversion and protection of single-phase low-voltage electrical panels.

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