Theam Leong electrical engineering project
Class A Electrical Contractor • CIDB G7 • ISO 9001:2015

Powering progress.
Built to deliver.

Established electrical engineering expertise for industrial, commercial, residential and infrastructure projects — from installation and testing to commissioning, maintenance and project delivery.

2002Established
15+ YearsIndustry Experience
CIDB G7Registered Contractor
Class ASuruhanjaya Tenaga
Theam Leong electrical engineering workElectrical project work
Since 2002Engineering with responsibility
Company Overview

Engineering confidence into every connection.

Theam Leong Electrical Engineering Sdn. Bhd. is an established electrical engineering contractor with extensive experience in electrical installation, wiring, maintenance, testing, troubleshooting and related engineering services for commercial, industrial and building projects.

We are committed to safe, reliable, cost-effective and quality solutions that meet client and project requirements — with a delivery mindset focused on time, budget, performance and long-term value.

On Time & On Budget
Safe & Quality Work
End-to-End Solutions
Continuous Improvement
Core Expertise

One team. Complete electrical capability.

Coordinated electrical solutions for demanding project environments, from main power systems and switchgear to safety, lighting, ELV and maintenance support.

01

Electrical Installation

Electrical wiring, distribution, sub-mains and installation works for industrial, commercial and building projects.

Electrical ServicesSub-Mains
02

HT & LV Switchgear

High and low voltage switchgear systems, power distribution and associated electrical infrastructure.

HTLVSwitchgear
03

Testing & Commissioning

Testing, verification, commissioning and system readiness prior to handover and operation.

TestingCommissioning
04

Lighting & Power

Lighting, power, emergency lighting and external lighting systems for complete building environments.

LightingPower
05

Lightning Protection

Lightning protection and related safety solutions designed for dependable facility operation.

ProtectionSafety
06

Security & Door Entry

CCTV, security and door entry system integration for modern commercial and industrial facilities.

CCTVAccess
07

Mechanical Services Integration

Electrical coordination with mechanical services and building systems for integrated project delivery.

M&EIntegration
08

Maintenance & Troubleshooting

Pre-planned maintenance, upgrading and troubleshooting to keep electrical systems reliable.

MaintenanceSupport
Certificates & Awards

Qualified, registered and quality focused.

Theam Leong maintains registrations and certifications that support compliant and professional project delivery, including SSM, Suruhanjaya Tenaga, CIDB G7, ISO 9001:2015, Ministry of Finance, TNB and Telekom contractor registrations.

CIDB G7Class A — Suruhanjaya TenagaISO 9001:2015TNB ContractorTM ContractorMOF / KKM Registered
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