1STQ008446A0000 ABB PHCT4402 2 T4 3-4P Fixed Horizontal Installation Kit W600 – System pro E power

Why Choose the ABB PHCT4402 T4 Fixed Horizontal Installation Kit?

The ABB PHCT4402 (1STQ008446A0000) is a dedicated horizontal installation kit for two fixed ABB Tmax T4 moulded case circuit breakers, designed for compatible ABB System pro E power low-voltage electrical distribution switchboards. Identified by the manufacturer's designation 2 T4 KIT 3-4P FIXED I HORIZ. W=600MM, this accessory supports a two-device installation arrangement for compatible 3-pole or 4-pole fixed Tmax T4 circuit breakers within a 600 mm wide switchboard configuration.

As part of the ABB System pro E power range, the PHCT4402 provides an application-specific mounting solution for integrating multiple circuit protection devices into modular electrical distribution assemblies. Its horizontal installation configuration supports the planned positioning of two compatible Tmax T4 circuit breakers, helping electrical panel builders organise protective equipment within the available switchboard space.

The ABB 1STQ008446A0000 is particularly relevant to industrial and commercial electrical distribution projects requiring two fixed circuit breaker positions in a compatible enclosure arrangement. Designed for a nominal 600 mm switchboard width, the PHCT4402 offers a manufacturer-specific installation solution for professional switchboard manufacturers, electrical contractors and panel builders.

Key Advantages

• Genuine ABB System pro E power installation accessory for compatible low-voltage switchboards.
• Specifically designated for two ABB Tmax T4 circuit breakers.
• Supports compatible 3-pole and 4-pole circuit breaker configurations.
• Designed for fixed-mounted Tmax T4 devices.
• Horizontal installation orientation for the specified switchboard arrangement.
• Designed for a 600 mm nominal switchboard width.
• Supports organised integration of two circuit protection devices.
• Manufacturer-specific mounting arrangement helps simplify installation accessory selection.
• Suitable for coordinated circuit breaker positioning within modular distribution assemblies.
• Designed for integration with compatible ABB System pro E power enclosure components.
• Suitable for industrial, commercial and infrastructure electrical distribution applications.

Key Features

• Manufacturer: ABB.
• Product range: System pro E power.
• Manufacturer type: PHCT4402.
• ABB order code: 1STQ008446A0000.
• Product designation: 2 T4 KIT 3-4P FIXED I HORIZ. W=600MM.
• Dedicated installation kit for compatible ABB Tmax T4 moulded case circuit breakers.
• Two-circuit-breaker installation arrangement.
• 3-pole and 4-pole compatibility as specified by the manufacturer.
• Fixed circuit breaker mounting configuration.
• Horizontal installation orientation.
• 600 mm nominal switchboard width.
• Includes the manufacturer's FIXED I configuration reference.
• Designed for compatible ABB System pro E power enclosure structures.
• Supports mechanical integration of two fixed circuit breakers into modular distribution assemblies.
• Dedicated accessory for professional electrical panel building and switchboard manufacturing.

Technical Specifications

• Manufacturer: ABB
• Product group: System pro E power
• Manufacturer type: PHCT4402
• ABB order code: 1STQ008446A0000
• SKU: 1STQ008446A0000
• Manufacturer designation: 2 T4 KIT 3-4P FIXED I HORIZ. W=600MM
• Product type: Circuit breaker installation kit
• Accessory category: Moulded case circuit breaker mounting accessories
• Compatible circuit breaker series: ABB Tmax T4
• Designated circuit breaker quantity: 2
• Compatible pole configurations: 3-pole / 4-pole
• Circuit breaker mounting configuration: Fixed
• Manufacturer configuration reference: FIXED I
• Installation orientation: Horizontal
• Nominal switchboard width: 600 mm
• Mounting application: Installation of two compatible fixed ABB Tmax T4 moulded case circuit breakers
• Compatible enclosure system: ABB System pro E power
• Equipment category: Low-voltage electrical distribution
• Primary application: Horizontal installation of two fixed moulded case circuit breakers within compatible modular switchboards

Horizontal Integration of Two Fixed ABB Tmax T4 Circuit Breakers

The ABB PHCT4402 horizontal installation kit is intended for the integration of two compatible fixed ABB Tmax T4 moulded case circuit breakers into a System pro E power low-voltage electrical distribution switchboard. Moulded case circuit breakers are used to provide electrical switching and protection against overloads and short circuits when appropriately selected and configured.

The ABB Tmax T4 series belongs to ABB's Tmax moulded case circuit breaker family and is used in industrial and commercial electrical distribution applications. The PHCT4402 is specifically identified as a two-T4 installation kit, distinguishing it from mounting arrangements intended for a single circuit breaker.

The manufacturer's 3-4P designation indicates compatibility with the specified 3-pole and 4-pole fixed circuit breaker configurations. This allows panel builders to consider the kit for suitable T4 installations requiring different pole arrangements, subject to the compatibility of the exact circuit breaker models and the complete switchboard design.

The FIXED I wording forms part of ABB's official product designation. It identifies the manufacturer's specified fixed installation configuration, but the precise meaning of the additional I reference and any associated installation requirements should be confirmed against ABB technical documentation rather than assumed.

The kit's horizontal installation orientation is intended for compatible System pro E power switchboard structures with a nominal width of 600 mm. This arrangement helps electrical panel builders coordinate the positioning of two circuit breakers with their electrical connections, operating access, busbar arrangements and required mechanical clearances.

The ABB System pro E power range provides a modular platform for professional low-voltage switchboard construction. Its configurable enclosure structures accommodate circuit protection devices, switching equipment, busbar systems and dedicated installation accessories. The PHCT4402 complements this modular system by providing a manufacturer-specific mounting arrangement for two compatible fixed Tmax T4 circuit breakers.

Correct installation requires suitable ABB Tmax T4 circuit breakers and compatible System pro E power enclosure components. The exact circuit breaker variants, pole configurations, fixing arrangements, electrical connections and installation clearances should be verified against the relevant ABB documentation. The completed low-voltage switchboard should be designed and verified in accordance with applicable IEC 61439 requirements.

Because the PHCT4402 is an installation accessory rather than a protective switching device, it does not independently determine the installed circuit breakers' current ratings, breaking capacities, trip unit characteristics or protection settings. These specifications depend on the separately selected Tmax T4 devices and the overall electrical distribution design.

Typical Applications

• ABB System pro E power low-voltage electrical distribution switchboards.
• Horizontal installation of two compatible fixed ABB Tmax T4 moulded case circuit breakers.
• Industrial electrical distribution panels requiring multiple circuit protection devices.
• Commercial building main and sub-distribution boards.
• Manufacturing facility electrical distribution equipment.
• Electrical switchrooms and plant room distribution installations.
• Modular switchboard construction incorporating compatible 3-pole Tmax T4 devices.
• Modular switchboard construction incorporating compatible 4-pole Tmax T4 devices.
• Professional electrical panel building and switchboard manufacturing.
• Electrical distribution projects requiring two fixed Tmax T4 circuit breaker positions within a 600 mm wide enclosure configuration.