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Low voltage · Main distribution boards

Type-tested main distribution for the projects that can't afford downtime.

Our LV switchboard range spans three families — type-tested BlokSeT and Prisma manufactured under Schneider Electric license, plus EPOS partial type-tested boards for custom distribution layouts. Form 4 separation, internal arc containment to 100 kA, and engineered for commercial, industrial, and critical-load environments across the Kingdom.

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Placeholder hero schematic — lv
Type-tested LV main distribution board: three-phase incoming duct, incomer air circuit breaker, a three-bar main busbar across the board, and Form-4 separated outgoing ways — each a moulded-case breaker feeding a cable termination — collected onto an earthed bar.
Voltage
Up to 690 Vac · 50 / 60 Hz
Main busbar rating
Up to 7,000 A
Short-time current
Up to 100 kArms / 1 s
Internal arc
100 kA / 0.4 s · IEC TR 61641

The range

Two type-tested families, engineered for the most demanding LV applications.

From the form-4 BlokSeT main board for critical distribution, to the modular Prisma panel for tertiary buildings, to a configurable EPOS board where a full type test is not specified.

  • Type-tested switchboard — BlokSeT
    Up to 690 Vac · Schneider licensed01 / 3

    Type-tested switchboard — BlokSeT

    Up to 30% energy savings

    Manufactured under Schneider Electric license and fully type-tested to IEC 61439-1 and -2. The reference for main distribution boards in commercial buildings, hospitals, airports, and industrial plants — modular, scalable, and Form-4 compliant for the highest level of internal separation.

    Up to 690 Vac · 7,000 A busbar · 100 kArms / 1 s · Form 4 · IP 54

  • Distribution panels — Prisma
    Up to 690 Vac · Schneider licensed02 / 3

    Distribution panels — Prisma

    Schneider Electric's Prisma distribution range manufactured under license. Engineered for floor- and wall-mounted distribution boards in commercial and tertiary buildings where modularity, safety, and aesthetics all matter — compatible with the full Schneider LV protection portfolio.

    Up to 690 Vac · 3,200 A busbar · Form 4 · IP 55 · IEC 61439-1/-2/-3

  • Partial type-tested switchboard — EPOS
    Up to 690 Vac · Partial type tested03 / 3

    Partial type-tested switchboard — EPOS

    Engineered to IEC 61439 as a partial type-tested system (PTTA). Flexible distribution-board configurations for projects requiring custom layouts where a full type-tested switchboard is not specified — built in the same Madinah facility, to the same quality system.

    Up to 690 Vac · Configurable busbar · PTTA · IEC 61439 · IP configurable

Side-by-side specifications

Full technical comparison across the LV range.

BlokSeT

Type-test compliance
Fully type tested
Rated voltage
Up to 690 Vac
Frequency
50 / 60 Hz
Main busbar rating
Up to 7,000 A
Distribution busbar rating
Up to 3,200 A
Short-time current (1 s)
Up to 100 kArms
Peak withstand current
Up to 220 kApeak
Internal arc
100 kA / 0.4 s
Form of separation
Up to Form 4
Earthing systems
TT · IT · TN-S · TN-C
Degree of protection
Up to IP 54
Compliance
IEC 61439-1, -2
Schneider license
Supported
Smart-ready
Supported

Prisma

Type-test compliance
Fully type tested
Rated voltage
Up to 690 Vac
Frequency
50 / 60 Hz
Main busbar rating
Up to 3,200 A
Distribution busbar rating
Up to 1,600 A
Short-time current (1 s)
Up to 65 kArms
Peak withstand current
Up to 143 kApeak
Internal arc
Application-specific
Form of separation
Up to Form 4
Earthing systems
TT · IT · TN-S · TN-C
Degree of protection
Up to IP 55
Compliance
IEC 61439-1, -2, -3
Schneider license
Supported
Smart-ready
Supported

EPOS

Type-test compliance
Partial type tested (PTTA)
Rated voltage
Up to 690 Vac
Frequency
50 / 60 Hz
Main busbar rating
Configurable
Distribution busbar rating
Configurable
Short-time current (1 s)
Application-specific
Peak withstand current
Application-specific
Internal arc
—
Form of separation
Configurable
Earthing systems
TT · IT · TN-S · TN-C
Degree of protection
Configurable
Compliance
IEC 61439 (PTTA)
Schneider license
—
Smart-ready
Optional

Where it's deployed

Engineered for the buildings, hospitals, and industrial plants of Vision 2030.

The LV main board is where a building's power chain becomes its own — everything downstream of the transformer depends on its integrity. We specify Form-4 BlokSeT where reliability and standardised safety levels are non-negotiable.

  1. 01

    Commercial buildings

    Main distribution boards for office towers, mixed-use developments, retail, and hospitality. Form-4 BlokSeT specified where high reliability and standardised safety levels are required.

  2. 02

    Healthcare facilities

    Hospital electrical infrastructure where uninterrupted power is a clinical requirement. Configurable with automatic transfer schemes, UPS integration, and life-safety load segregation.

  3. 03

    Airports and transportation

    LV distribution for terminals, control towers, runway lighting, and ground support facilities. Engineered for 24/7 operational requirements and the load profiles specific to aviation.

  4. 04

    Industrial and manufacturing

    Main and sub-distribution for production facilities, process plants, and manufacturing complexes. Compatible with MCC integration and process automation systems.

  5. 05

    Data centers and critical infrastructure

    Mission-critical distribution where redundancy and arc-fault containment are mandatory. Form-4 separation, internal arc to 100 kA, and N+1 backup configurations.

  6. 06

    Education and government

    University campuses, ministerial complexes, and embassies. Configurable for both standalone substations and larger distribution networks.

LV distribution hierarchy
Placeholder deployment diagram — lv

An MV source steps down through a transformer to the Form-4 LV main switchboard, which fans out through outgoing ways to sub-distribution, a motor control centre, and a final distribution board — each feeding its loads.

Engineered to standard

Type-tested. Independently certified. Schneider-licensed.

The LV switchboard family is designed and type-tested per the IEC standards covering low-voltage assemblies, distribution boards, and arcing due to internal fault.

IEC standards compliance

  • IEC 61439-1Low-voltage switchgear and controlgear assemblies — general rules.
  • IEC 61439-2Power switchgear and controlgear assemblies.
  • IEC 61439-3Distribution boards intended to be operated by ordinary persons.
  • IEC TR 61641Guide for testing under conditions of arcing due to internal fault.

Management systems and licensing

  • ISO 9001 : 2015
  • ISO 14001 : 2015
  • ISO 45001 : 2018
  • Schneider Electric · Licensed (BlokSeT, Prisma)

Documentation

Everything your engineering team needs to specify, install, and commission.

Datasheets, dimensional drawings, type-test certificates, and an installation manual, released on engagement to the named project team.

LV switchboard documentation is released to qualified buyers. Send your single-line diagram, load schedule, or board schedule and we will return the bundle — with an indicative board layout — within one working day.

Often deployed together

Related products in the TEPCO portfolio.

The families most often specified alongside LV switchboards on Saudi building and industrial projects.

Ready to specify low voltage switchboards?

Send us your single-line diagram or technical requirement, and our Madinah engineering team will respond within 24 hours with an indicative board layout and configuration.

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