WESTINGHOUSE Alpha Plus Series Low Voltage Distribution System

2. Installation steps

Equipment positioning: Determine the installation position according to the design drawings and reserve sufficient operation and maintenance space (surrounding ≥ 50cm).

Fixed equipment: Floor standing equipment is fixed to the foundation through anchor bolts; Wall mounted equipment is fixed to the wall with expansion bolts to ensure a secure installation.

Cable wiring: Both top and bottom entry lines are acceptable, and the cable must be sealed and protected when passing through the glass plate; The cable cross-section should match the rated current, and the wiring terminals should be tightly pressed to avoid false connection and heat generation.

Grounding connection: Connect the equipment grounding terminal reliably to the on-site grounding system, with a grounding resistance of ≤ 4 Ω.

Pre power on inspection: Check the incoming phase and voltage, inspect the busbar connection and outgoing circuit configuration to ensure compliance with design requirements.

Core Series Selection and Specifications Detailed Explanation

（1） Three phase distribution board selection table (Ci/Ge/Fi series)

Series rated current, number of outgoing lines, installation method, external dimensions (width x depth, mm), specifications for branch circuit breakers

Ci Series 250A 2-16 Surface/Embedded 650 × 175, 750 × 175 Maximum 160A MCCB

Gi Series 400A 2-18 Surface/Embedded 650 × 185, 750 × 185 Maximum 225A MCCB

Fi Series 630A 4-18 Surface/Embedded 650 × 200, 750 × 200 Maximum 225A MCCB

（2） Terminal Distribution Board Selection Table (Bi/PQ Series)

Series rated current, number of outgoing lines, installation method, external dimensions (width x depth, mm), incoming line type

Bi series 125A-250A 4-16 channel surface/embedded/double-layer 430 × 105-135 MCB/RCCB/MCCB

PQ Series 125A-250A 4-16 Surface/Embedded/Plug in 430 × 105-125 MCB/RCCB/MCCB

（3） Single phase distribution board selection table

Series rated current, number of outgoing lines, installation method, external dimensions (width x depth, mm), incoming line type

COJ series 100A-125A 2-14 channels surface/embedded 230 × 90 DIN/RCD/plug-in type

Din Rail Series 100A 2-14 Road Surface/Embedded 233 × 90, 270 × 90 DIN Rail Type

（4） Selection Table for Row Distribution Board (RT Series)

Number of rows, number of modules, installation method, external dimensions (width x depth, mm), applicable scenarios

1-6 rows 16 module surface/embedded 450 × 110 residential, small commercial

3-6 rows 24 module surface/embedded 594 × 110 medium-sized commercial and office space

Accessory system and expansion plan

（1） Core accessories

1. Functional accessories

Examples of accessory types, specifications, and usage models

The measuring kit includes an ammeter, voltmeter, 4/7-position selector switch, and indicator lights, used for current/voltage monitoring EXBCJG2, EXBCKG2

Expansion box top/bottom/side expansion, increasing wiring space or installing control components, 1.5mm steel plate, RAL 7032 coating EXBCJG4, EXBF4, CEXB105/400

Blank board covers the idle outlet to prevent foreign objects from entering, divided into dedicated CBPCMB, CBPG, CBPF for MCB/MCCB (G/F frame)

Door lock accessories enhance the safety of door panels, including door latches and steel locks, compatible with all series W603697, W603698

2. Connection and fixing accessories

Bolt: M6-M36 specification, torque 25-20000 kg-cm, in compliance with mechanical connection standards.

Grounding terminals: M6 (neutral wire/grounding strip), M10 (main grounding terminal), ensure reliable grounding.

Cable gland plate: detachable, easy to drill and wire, with good sealing performance, ensuring protection level.

（2） Expansion plan

Horizontal expansion: Add output modules, flexibly expand 2-18 channels, protect idle output ports with blank boards, and add circuit breakers as needed in the later stage.

Vertical expansion: Increase wiring space through top/bottom expansion boxes, or install additional control and metering components.

Lateral expansion: Expand the capacity of the busbar through the lateral expansion box to meet the demand for load growth.

Upgrade and Expansion: Replace busbars or circuit breakers with higher current levels without the need to replace the entire equipment, reducing expansion costs.

Application scenarios and selection suggestions

（1） Core application areas

Industrial scenarios: Factory production lines, data centers, and large-scale equipment power distribution. We recommend the MDB series (800A-6400A)+Gi/Fi series distribution boards to meet heavy-duty and high reliability requirements.

Commercial scenarios: shopping malls, office buildings, hotels, Bi/PQ series terminal distribution boards+RT series line distribution boards are recommended to meet the needs of distributed power distribution and compact space.

Residential scenarios: apartment buildings, villas, recommended single-phase COJ/Din Rail series+three-phase Ci series, suitable for low current and multi circuit needs.

Special scenarios: humid and dusty environments (such as underground garages and workshops), we recommend the MDB series with IP54 protection and sealed outlet modules to enhance environmental adaptability.