Heavy-Duty Square Wave Electric Tricycle Controller Built for Real Work

If your three-wheelers keep burning out controllers in the field, you already know the problem: most controllers on the market are rated for light duty but sold into demanding cargo and passenger routes. The result is overheating, phase failures, and downtime that costs you orders and reputation. At Kechuang Electromechanical (Xuzhou Kehuan Electrical & Mechanical Equipment Co., Ltd.), we have been engineering square wave BLDC controllers specifically for electric tricycles and three-wheelers since 2012. Our EC-01 series is designed around one principle — run hard, run cool, run reliably for the full life of the vehicle. Whether you are assembling 500 cargo trikes a year or stocking a parts warehouse that serves 200 repair shops, we build the controller that goes in and stays in.

 

 

 

Compatible motor types: Brushless DC (BLDC) square wave, 3-phase

Rated voltage: 48V / 60V / 72V (24V and 36V available on request)

Current range: 18A (6-tube entry) up to 120A (30/36-tube heavy duty)

Rated power: 500W – 3,000W

MOSFET tube count: 6 / 12 / 18 / 24 / 30 / 36 tubes (full range stocked)

Wire gauge: 3 mm² (small frame) up to 10 mm² (large frame, 36-tube)

Terminal options: Screw-column, copper post, or aluminum base-plate PCB

Protection functions: Over-voltage, under-voltage, over-current, thermal protection, locked-rotor protection, soft-start

Operating temperature: -25°C to +45°C

Operating altitude: ≤ 4,000 m

Certification: ISO 9001:2015, GB/T 18488.2 test standard

 

 

 

— ISO 9001:2015 certified since establishment; national High-Tech Enterprise status

— MES + ERP digital production management — every batch is traceable

— Serving 1,000+ domestic and overseas customers across 14 years

— Annual production growth of 15%+ for 10 consecutive years

— University R&D partnership with Guilin University of Electronic Technology

— Third Prize, 9th Xuzhou Science & Technology Innovation Competition (Brushless Drive System project, 2021)

— Repeatedly awarded "Best Supplier" and "Strategic Partner" by major OEM clients

Product Line Advantage: 48V 72V Brushless Motor Controller for 3-Wheel Electric Vehicle

Our EC-01 range is the only square wave line in the market that ships six tube-count configurations from a single factory — 6-tube for entry e-bikes, all the way up to 36-tube for 3 KW cargo and multi-passenger trikes. You do not need four vendors; you need one.

 

 

— Voltage customization: 24V, 36V, 48V, 60V, 72V

— Current limit adjustment: factory-set or customer-specified

— Speed limit, soft-start ramp, and regenerative braking curve: programmable on request

— Wire gauge, connector type, and housing color: configurable for your assembly line

— OEM/ODM branding: label, packaging, and firmware version

— Minimum order: 50 units per SKU (mixed SKUs accepted)

— Tooling support available for large-volume customization (500+ units)

 

 

Client profile: A three-wheel cargo vehicle manufacturer based in Ho Chi Minh City, Vietnam, producing approximately 800 units per year for urban last-mile delivery fleets.

The problem: The client had been sourcing 24-tube 72V square wave controllers from three different suppliers. Inconsistent quality meant field failure rates of 19% within the first 12 months. Fleet operators were reporting overheating shutdowns during afternoon peak hours in 38°C ambient temperature. Warranty replacements were costing the manufacturer an estimated USD 28,000 per year and damaging their brand with fleet buyers.

The solution: The client switched entirely to our KH24-tube 72V / 80A square wave controllers (EC-01 series, aluminum base-plate variant with copper post terminals). We adjusted the thermal protection threshold and soft-start ramp specifically for their 1,200W motor configuration, and provided the complete GB/T 18488.2 test report for the model.

 

Results after 14 months in production:

 

— 12-month field failure rate: 19% down to 1.3% (a reduction of 93%)

— Warranty replacement cost: USD 28,000/year down to under USD 2,100/year

— Customer complaint tickets related to controller overheating: 47/month down to 3/month

— The manufacturer increased their annual order volume from 800 units to 1,400 units in Year 2, citing improved product reliability as the primary driver

This is what a high current Electric Tricycle Controller 120A manufacturer is supposed to deliver — not just a part, but a measurable improvement to your production quality and your customer retention.

 

 

 

Q1: Will your square wave controllers work with my existing BLDC motors from other brands?

Yes. Our EC-01 series is designed for standard 3-phase brushless DC motors with Hall sensors. It is compatible with the vast majority of 48V, 60V, and 72V motors used in electric tricycles, cargo trikes, and low-speed four-wheelers. If you send us your motor's rated voltage, rated power, and Hall sensor specifications, we will confirm compatibility in writing before you place an order.

Q2: What is the minimum order quantity, and how do you handle mixed SKU orders?

Minimum order is 50 units per SKU. Mixed SKU orders (for example, 100 units split across 18-tube and 24-tube variants) are accepted with no surcharge. For orders of 500 units or more, we can assign a dedicated production batch and offer priority quality inspection. Sample orders of 5–10 units are available at standard unit price to allow pre-production testing.

Q3: What documentation can you provide for customs clearance and product compliance?

We provide the following as standard: ISO 9001:2015 certificate (English copy), GB/T 18488.2 test report, commercial invoice, packing list, and a certificate of origin. If your import country requires additional documentation — such as CE marking support, RoHS declaration, or third-party inspection — please inform us at the inquiry stage. We have supported customers in the EU, Southeast Asia, Latin America, and Africa with documentation requirements.

 

 

If you are sourcing a square wave Electric tricycle controller for cargo vehicles, replacement parts, or a new model launch, we want to talk about your actual requirements — not just send a price list.

We offer:

— Free sample testing (5 units, buyer pays freight)

— Written compatibility confirmation within 48 hours of receiving motor specs

— Technical support via WhatsApp or email throughout the product life cycle

— Dedicated account manager for orders above 500 units/year

 

Send us your motor spec sheet, your monthly volume estimate, and your target market — and we will come back with a full product recommendation, technical parameters, and a competitive ex-works price within 24 hours.