WESTINGHOUSE Alpha Plus Series Low Voltage Distribution System

WESTINGHOUSE Alpha Plus Series Low Voltage Distribution System

Product Overview and Core Configuration

Category specific specifications

Brand and Series: Westinghouse Alpha Plus Series

Product Matrix Main Distribution Board (MDB), Distribution Board (SMDB), Terminal Distribution Board (Final DB), Row Distribution Board (RT Series)

Phase and current range: Three phase: 800 A-6400A（MDB）、250A（Ci）、400A（Gi）、630A（Fi）、800-1250A（Ki）、125-250A（Bi/PQ）；

Single phase: 100A-125A (COJ/Din Rail series)

Protection level standard IP43, MDB model IP54 (compliant with IEC 60529)

Core structure shell: 2.0mm galvanized steel plate (outer cover), 1.0mm steel plate (internal partition);

Busbar: Fully tinned copper busbar, 100% full-size neutral wire;

Surface treatment: RAL 7032 textured powder coating, supports customized colors

Certification and standards comply with IEC 61439-1/2, ASTA/KEMA certification, and have passed tests such as temperature rise, dielectric performance, and short-circuit withstand

Overview of Product Core Technical Parameters

（1） Basic specifications and certification

Category specific specifications

Product series Alpha Plus (including sub series such as MDB, SMDB, Final DB, Row Type, etc.)

Rated current main distribution board (MDB): 800A-6400A; Distribution board (Ci/Ge/Fi): 250A-630A; Terminal distribution board (Bi/PQ): 125A-250A; Single phase distribution board: 100A-125A

Protection level standard level: IP43 (preventing solid foreign objects and splashing water); Enhanced level (MDB): IP54 (dustproof+waterproof); Line type distribution board: IP41

Certification standards IEC 61439-1/2/3, ASTA, KEMA, PSB (Singapore), compliant with NEMA standards

Frequency adaptation 50/60Hz universal

Voltage adaptation 380/415V, maximum 600V AC

（2） Structure and material parameters

Category specific specifications

Shell material outer cover/door panel: 2.0mm thick electro galvanized steel plate; Internal partition: 1.0mm thick steel plate; Line type distribution board: 1.2mm steel plate

The busbar configuration is made of fully tinned copper busbar, with 100% full-size neutral wire and no black copper material; Optimization of busbar support spacing to ensure heat dissipation and stability

Surface treatment standard: RAL 7032 textured powder coating (light beige); Support customized colors

Form 2/3/4 structure for separation, up to Form 4-Type 7, with fully isolated live parts

Installation methods include surface installation, embedded installation, and plug-in installation, suitable for different space requirements

（3） Key electrical performance

Category specific specifications

Short circuit withstand current 25kA/3s, 35kA/1s, 50kA/1s, 80kA/1s, 100kA/1s (classified by model)

The temperature rise of the busbar is ≤ 80K (applicable for vertical/horizontal installation, both forward and reverse feeding)

Outgoing configuration 2-18 channels, supporting modular expansion, idle outgoing ports can be protected by blank boards

Maximum cable cross-section for cable adaptation: MCCB circuit up to 300mm ², MCB circuit up to 95mm ²; Neutral wire and grounding terminal specifications: M6/M10

Measurement function supports analog/digital measurement kit, including ammeter, voltmeter, selector switch, and 3 sets of indicator lights (maximum installation size of 96 × 96mm)

Product System and Core Series Detailed Explanation

（1） Core series of three-phase distribution board

1. Main Distribution Board (MDB) Series

Core positioning: Industrial/commercial scene main distribution center, rated current 800A-6400A, short-circuit withstand current 50kA-100kA/1s.

Structural design: 300mm high busbar room (top/bottom optional), independent incoming line area (ACB, instrument, incoming cable compartment), minimum 200mm high outgoing line area, expanded by a multiple of 25mm; Equipped with M12 lifting rings for easy transportation and installation.

Key configuration: IP54 protection, fully tinned copper busbar, 2.0mm galvanized steel plate shell, semi hidden hinge+door lock design, door panel with sealing gasket.

2. Distribution board (Ci/Ge/Fi series)

Series Rated Current Core Features Outgoing Specification

Ci series 250A short-circuit withstand 35kA/1s, 25kA/3s, IP43 protection, 1.5mm steel plate shell 2-16 circuits, branch MCCB maximum 160A

Gi series 400A fully supported busbar without capacity reduction, external/internal grounding terminal, detachable incoming cover plate 2-18 channels, branch MCCB maximum 225A

Fi series 630A ASTA certification, fully shielded with live parts, ample wiring space 4-18 channels, branch MCCB maximum 225A

3. Terminal distribution board (Bi/PQ series)

Bi series: rated current 125A-250A, supports surface/embedded/double-layer installation, with optional MCB/RCCB/MCCB (maximum 250A) incoming lines and DIN rail type outgoing lines, configured with 2-16 channels.

PQ series: Plug in design, easy installation, rated current 125A-250A, supports surface/embedded installation, with plug-in module output, 4-16 channel configuration, suitable for fast expansion scenarios.

4. Ki series (800-1250A)

Specially designed for medium to large commercial/industrial scenarios, with a short-circuit withstand of 50kA/1s, 35kA/3s, IP54 protection, 2.0mm steel plate floor standing shell, fully insulated tin plated copper busbar, 6-18 outgoing lines, and branch circuit breakers with a maximum of 800A.

（2） Single phase distribution board series

1. COJ series (plug-in)

Rated current 100A-125A, 2-14 output lines, supporting surface/embedded installation, optional DIN/RCD/plug-in inlet, maximum cable capacity 50mm ² (100A), suitable for residential and small commercial scenarios.

2. Din Rail series (rail type)

Rated current 100A, 2-14 outgoing lines, surface/embedded installation, DIN rail type incoming line, branch supports MCB/RCBO, maximum cable capacity 35mm ² (125A), compact structure, space saving.

（3） Row distribution board (RT series)

Modular compact design, 1-6 line configuration, supports 16/24 module installation, surface/embedded installation, IP41 protection, 1.2mm steel plate shell, RAL 7032 coating, suitable for distributed power distribution needs in residential and commercial spaces.

Structural Design and Safety Protection

（1） Structural design highlights

1. High strength shell and partition design

The shell is made of 2.0mm galvanized steel plate, which is integrally formed and resistant to impact and corrosion. The interior is independently divided into "incoming line area, busbar room, outgoing line area, and instrument area" to avoid circuit interference and improve operation and maintenance convenience.

The busbar room has a height of 300mm and a width of 300mm. It supports top/bottom cable entry and has a detachable entry glass plate for easy on-site wiring.

The door panel is equipped with semi concealed hinges and safety locks to prevent accidental operation; All door panels are equipped with sealing gaskets to ensure that the IP protection level meets the standard.

2. Busbar system design

Adopting fully tinned copper busbar, with excellent conductivity, oxidation resistance, and corrosion resistance; 100% full-size neutral wire ensures stable transmission of unbalanced current, without the use of black copper material.

Optimization of busbar support spacing, combined with ventilation design, ensures that the temperature rise of the busbar is ≤ 80K to avoid overheating and aging; The busbar room is isolated from the outgoing line area to enhance safety protection.

3. Installation and expansion design

Support surface installation, embedded installation, plug-in installation, and adapt to different spatial layouts; The line type distribution board can be embedded for installation, saving floor space.

Modular outgoing design, 2-18 flexible configurations, idle outgoing ports can be covered and protected by dedicated blank boards; Support top/bottom/side expansion boxes for easy capacity expansion.

（2） Full dimensional security protection

1. Electrical safety protection

Short circuit protection: Short circuit withstand current of 25kA-100kA, adapted according to model classification, to avoid damage to equipment caused by short circuit arc.

Insulation protection: Creepage distance and electrical clearance comply with IEC standards, insulation materials are resistant to high temperatures and fire, and have passed abnormal heat and fire tests.

Grounding protection: Grounding terminals are installed both externally and internally, and the neutral wire is designed to be separated from the grounding system. The grounding resistance is ≤ 4 Ω to prevent the risk of electric shock.

2. Physical security protection

Protection level IP43-IP54, effectively blocking solid foreign objects, splashes, and water sprays from entering, suitable for various indoor and outdoor environments.

Fully shielded design for live parts, with no exposed live parts after the door panel is closed; The operation area is isolated from the live area to prevent accidental contact during operation and maintenance.

The shell is made of flame-retardant material, with a steel plate thickness of ≥ 1.0mm, which is impact resistant and deformation resistant, improving the durability and safety of the equipment.

Installation and transportation specifications

（1） Transportation requirements

1. Forklift transportation

Suitable for distribution boards with a depth of ≤ 250mm, they need to be secured with ropes during transportation to avoid shaking; The equipment with busbar room needs to confirm the center of gravity in advance to prevent tipping.

The spacing between forklift arms should match the size of the equipment base to avoid squeezing the outer shell or internal components.

2. Crane transportation

Only use the M12 lifting ring on the top of the equipment, with an angle of ≥ 45 ° between the sling and the top of the equipment, and transport a maximum of 3 column type equipment at a time.

The sling should be made of high-strength materials to ensure that its load-bearing capacity matches the weight of the equipment; Before transportation, check that the lifting rings and slings are securely connected and not loose.

Follow the requirements of DIN 580 standard for mechanical connection components to ensure lifting safety.

（2） Installation specifications

1. Installation environment

Environmental temperature: -5 ℃~+40 ℃, avoid high temperature, high humidity, and corrosive gas environment; Altitude ≤ 1000m, exceeding altitude requires reduced capacity for use.

Installation surface: solid, flat, able to withstand equipment weight (floor standing equipment needs to be fixed on a concrete foundation); When installing on the surface, it should be firmly fixed to avoid vibration.

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.

（2） Key points of selection

Load matching: Select the rated current based on the total load current, with a 20% margin reserved; Select circuit breaker specifications based on equipment requirements for branch current.

Protection level: Choose IP43 for dry indoor environments, IP54 for humid/dusty environments, and additional protection is required for outdoor scenes.

Installation space: Choose surface installation for ample space, and embedded/row type distribution boards for compact space.

Expansion requirements: When the future load may increase, modular design products should be prioritized and expansion interfaces should be reserved.

Certification compliance: Select products with complete certification according to the specifications of the project location to ensure compliance.