THB — The House of Business Electric Solution

From the 11 kV line to the last light point.

We supply every electrical item at wholesale rates and install, commission and maintain the systems they go into — for factories, commercial buildings and apartment projects across Bangladesh.

Licensed electrical supervisors · work to BNBC 2020 and IEC 60364 Load sanction handled with DPDC, DESCO, BREB and NESCO Wholesale supply to dealers, contractors and factory purchase departments A division of THB — The House of Business, Dhaka

Power down, breaker tripping, transformer overheating? Emergency crews on call across Dhaka and nearby districts. Call the direct mobile.

Call +880 1805-564599

Every electrical item, at wholesale rates

We supply dealers, contractors, factories and project purchase departments — from a drum of cable to a complete substation package. One quotation, one delivery, one bill.

Trade pricing

Rates drop with quantity. Regular dealers and contractors get a standing price list, revised when the market moves.

Supply against BOQ

Send the bill of quantities and receive one quotation covering every line, with brand, rating and lead time stated.

Delivery nationwide

Same day inside Dhaka, courier or transport to any district, packed to survive the road and the rain.

Proper paperwork

VAT challan (Mushak 6.3), warranty card and test certificate where the product carries one — ready for audit.

01Cable and wire

Single and multi-core PVC, XLPE power cable, flexible wire, armoured underground cable, ACSR overhead conductor, fire-resistant cable, submersible pump cable, welding cable, coaxial and CAT6 data cable, busbar trunking.

02Circuit protection

MCB, RCCB and RCBO, MCCB, ACB, isolator and changeover switch, HRC fuse and fuse base, surge protection device, magnetic contactor, overload relay, timer and control relay.

03Distribution boards and enclosures

MDB and SDB, consumer unit, metal and plastic DB boxes, custom-built panel enclosure, feeder pillar, junction box, weatherproof IP65 and IP66 enclosures, gland plates and panel accessories.

04Switches, sockets and wiring accessories

Modular and flush switches, 2-pin and 3-pin sockets, 13 A and 16 A sockets, industrial plug and socket, fan regulator, dimmer, bell push, USB, TV and telephone outlets, cover plates and blanks.

05Conduit, tray and cable management

PVC conduit and fittings, flexible conduit, GI pipe, perforated and ladder cable tray, trunking, cable gland, lug and ferrule, cable tie, clip and saddle, heat shrink sleeve and insulation tape.

06Lighting

LED bulb and tube, panel light and downlight, batten, flood light, street light, high bay, garden and decorative fittings, emergency light, exit sign, LED driver, motion and daylight sensors.

07Fans and ventilation

Ceiling fan, BLDC fan, wall bracket and stand fan, exhaust fan, industrial and air-circulator fan, shed ventilation fan, fan capacitor, blade and spare parts.

08Substation and HT equipment

Distribution transformer, VCB and LBS panel, dropout fuse, lightning arrester, current and potential transformer, HT and LT termination kits, insulators, pole hardware and cross arm.

09Metering and power factor

Digital and prepaid energy meter, multifunction meter, ammeter and voltmeter, current transformer, selector switch, indicator lamp, power capacitor, PFI controller and complete capacitor bank.

10Generator and backup power

Diesel generator, alternator, AMF and ATS panel, UPS and IPS, inverter, tubular and SMF battery, voltage stabiliser, automatic voltage regulator, generator filters and spare parts.

11Solar

Mono and poly PV modules, on-grid, off-grid and hybrid inverters, MPPT charge controller, mounting structure, MC4 connector, solar DC cable, lithium and tubular battery, net metering kit.

12Motors, drives and automation

Induction motor, submersible pump and motor, VFD, soft starter, DOL and star-delta starter, PLC and HMI, proximity and photoelectric sensors, limit switch, push button and pilot devices.

13Earthing and lightning protection

Copper and GI earth rod, earth plate, chemical earthing compound, earth pit cover, copper strip and tape, earth clamp, conventional air terminal and ESE lightning arrester.

14Fire detection and safety

Smoke and heat detector, addressable and conventional fire alarm panel, manual call point, hooter and strobe, fire extinguisher, hose reel, sprinkler head, fire pump panel and emergency lighting.

15CCTV, security and networking

IP and analogue CCTV camera, NVR and DVR, access control and time attendance, video door phone, electric door lock, PABX and intercom, network switch, router, rack, patch panel and PA system.

16Tools, meters and safety gear

Multimeter, clamp meter, megger, earth resistance tester, phase sequence meter, thermal camera, crimping and cutting tools, drill machine, insulated hand tools, helmet, gloves and safety belt.

17Household and light electrical

Water heater and geyser, water pump, extension cord and multiplug, adaptor, door bell, iron and kettle points, air conditioner electricals, room heater and small appliance spares.

Not listed here does not mean not available. If you name the brand and rating you have specified, we source it and quote it — including imported items brought in on order.

Send a BOQ for quotation

What we install and look after

One contractor from the incoming HT line down to the socket outlet — so nobody is arguing about whose scope a fault belongs to.

11 / 0.4 kV · 100–2500 kVA

Substation and HT line

Load sanction paperwork with the utility, HT line pulling and pole work, VCB and LBS switchgear, transformer installation, protection settings and commissioning.

LT panel · up to 4000 A

Panel boards and power factor

Main and sub distribution boards, motor control centres, changeover and synchronising panels, automatic PFI plants that keep the power factor above 0.95, busbar trunking and cable termination.

Diesel · 30–1500 kVA

Generator installation and service

Supply and foundation, AMF and automatic changeover, exhaust and fuel lines, acoustic canopy, load bank testing at handover, then scheduled servicing so it starts when the grid drops.

Rooftop · net metering

Solar power

Grid-tied rooftop plants with net metering approval, and hybrid systems with battery backup where the roof has to carry the load through an outage. Delivered together with THB Solar.

Internal wiring · BNBC 2020

Wiring and distribution

Conduit and cable tray routing, distribution boards, lighting and power circuits, three-phase machine points on factory floors, and a proper earth at every point rather than at the panel only.

FDAS · hydrant & sprinkler

Fire detection and safety

Addressable and conventional fire alarm systems, sprinkler and hydrant pump panels, emergency lighting and exit signage — documented and wired the way Fire Service and Civil Defence expect at inspection.

Earth resistance < 1 Ω

Earthing and lightning protection

Chemical or plate earth pits, separate earths for neutral, body and electronics, equipotential bonding, conventional and ESE lightning arrestors — all measured and handed over with test readings.

ELV · CCTV, access, PABX

Low-voltage systems

CCTV, access control, intercom and PABX, structured data cabling and public address — planned into the same conduit run as the power, not drilled in afterwards.

PLC · VFD · SCADA

Industrial automation

Starter and motor control panels, VFD drives for pumps and compressors, PLC logic with HMI screens, sensor and field wiring, and SCADA reporting on production lines.

AMC · 24/7 callout

Maintenance and testing

Thermographic scanning of joints and breakers, insulation and earth resistance testing, transformer oil testing, breaker servicing, and annual maintenance contracts with a named response time.

How a job runs

The same five steps whether it is a six-storey apartment building or a factory shed, so you always know what happens next.

Site survey

We visit, measure the connected load, check the existing supply and list what has to be replaced.

Design and BOQ

Single line diagram, layout drawings and an itemised bill of quantities with brand and rating against every line.

Approvals

Load sanction with the utility and fire safety clearance — we prepare, submit and follow up the file.

Installation

Supervised crews, branded cable and accessories, staged testing as each floor or section closes.

Commissioning

Energisation, test reports, as-built drawings, operator briefing, then a maintenance contract if you want one.

Size your supply before you call

Add up the connected load of everything in the building, then see roughly what transformer, breaker, generator and PFI bank it needs.

Maximum demand 235 kVA
Transformer size 400 kVA
LT main breaker 400 A
Standby generator 250 kVA
PFI bank to reach 0.98 75 kVAr

Indicative figures only. Final sizing comes from a site survey and a full calculation to BNBC 2020 and IEC 60364, including cable length, starting current and future expansion.

Buildings we work in

Each building type fails in its own way. These are the ones we know well enough to design around.

Apartment buildings

Per-flat metering, lift and pump circuits on the generator side, and a riser that can take a future solar feed.

Garment and light manufacturing

Three-phase machine points, compliance-grade documentation for buyer audits, and power factor kept where the bill stays low.

Offices and showrooms

Lighting design that survives a fit-out change, clean earth for servers, and ELV pulled with the power.

Hospitals and clinics

Essential and non-essential separation, UPS-backed circuits for theatres, and changeover timing that equipment tolerates.

Warehouses and cold storage

High-bay lighting, compressor starting current handled properly, and alarms that reach a phone when a room warms up.

Schools and institutions

Tamper-resistant accessories, zoned circuits so one lab does not take down a floor, and clear panel labelling.

Cheap wiring is the most expensive thing in a building

Most electrical fires in Bangladesh trace back to undersized cable, a missing earth or a loose termination. These four rules are how we avoid all three.

Licensed supervision on site

Work is carried out under supervisors holding a current licence from the Electrical Licensing Board, not left to unsupervised crews.

Cable sized to the calculation

Conductor size comes from current, length and voltage drop — never from what happens to be cheapest at the counter that week.

Tested before energisation

Insulation resistance, continuity, earth resistance and polarity are measured and recorded before the supply is switched on.

Drawings handed over, not kept

You receive as-built drawings, panel schedules and test reports, so the next electrician is not guessing behind your walls.

Tell us what the building needs

A site visit inside Dhaka is free. Send the details below and the message opens in WhatsApp, ready to send.

Prefer email? Write to the address on the right and we reply the same working day.

Office
THB — The House of Business
Level 10, Shyamoli Square
Dhaka 1207, Bangladesh
Telephone
+880 9639-321355
WhatsApp
+880 1805-564599 direct
+880 1550-721721 information
Hours
Daily, 9:00 AM – 7:00 PM