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KT Waterproof Sine Wave E-Bike Controller – 36V/48V Brushless Motor Controller
KT Waterproof Sine Wave E-Bike Controller – 36V/48V Brushless Motor Controller
Description
Description
The KT Waterproof Sine Wave E-Bike Controller is a high-performance replacement or upgrade controller designed for 36V and 48V electric bike systems. Available in multiple current ratings from 15A to 30A, it delivers smooth, quiet motor operation while providing reliable power management for a wide range of hub motor and e-bike conversion kits.
Featuring waterproof connectors and advanced sine wave technology, this controller offers improved efficiency, responsive acceleration and dependable performance for commuting, touring and off-road riding.
Dimensions
KT-15A Waterproof Controller
- Rated voltage: 36V / 48V
- Rated power: 250W
- Rated current: 7A
- Maximum current: 15 ±1A
- MOSFETs: 6
- Dimensions: 8.15 × 5.17 × 3.1 cm (3.2 × 2.04 × 1.2 in)
- Weight: 202 g (0.45 lb)
KT-17A Waterproof Controller
- Rated voltage: 36V / 48V
- Rated power: 350W
- Rated current: 8A
- Maximum current: 17 ±1A
- MOSFETs: 6 high-performance
- Dimensions: 9.25 × 6.13 × 3.5 cm (3.6 × 2.4 × 1.4 in)
- Weight: 250 g (0.55 lb)
KT-22A Waterproof Controller
- Rated voltage: 36V / 48V
- Rated power: 500W
- Rated current: 11A
- Maximum current: 22 ±1A
- MOSFETs: 9
- Dimensions: 12.5 × 6.6 × 3.8 cm (4.9 × 2.6 × 1.5 in)
- Weight: 356 g (0.78 lb)
KT-25A Waterproof Controller
- Rated voltage: 36V / 48V
- Rated power: 750W
- Rated current: 12A
- Maximum current: 25 ±1A
- MOSFETs: 9 high-performance
- Dimensions: 12.5 × 6.6 × 3.8 cm (4.9 × 2.6 × 1.5 in)
- Weight: 356 g (0.78 lb)
KT-30A Waterproof Controller
- Rated voltage: 36V / 48V
- Rated power: 1000W
- Rated current: 15A
- Maximum current: 30 ±2A
- MOSFETs: 12
- Dimensions: 17 × 8.2 × 4.12 cm (6.7 × 3.2 × 1.6 in)
- Weight: 503 g (1.11 lb)
Performance
Using advanced sine wave technology, the KT controller delivers quieter operation, smoother acceleration and more precise motor control than conventional square wave controllers. It provides consistent power delivery while helping improve riding comfort and motor efficiency.
Available in five current ratings, the controller can be matched to a variety of motor outputs and riding requirements.
Key performance features include:
- Sine wave motor control
- Compatible with 36V and 48V systems
- Current options from 15A to 30A
- Low-level brake input
- Throttle input range: 1V to 4.2V
- Optimised for brushless hub motor systems
Safety and Features
The controller is equipped with waterproof connectors that help protect electrical connections from rain, moisture and road spray, making it suitable for year-round riding.
Its durable aluminium housing provides effective heat dissipation to help maintain stable performance during extended use while protecting the internal electronics.
Multiple controller options allow riders to select the ideal output for commuter bikes, touring bikes or higher-powered electric bike conversions. The compact design enables straightforward installation in most compatible e-bike frames and controller compartments.
Dimensions
Dimensions
Performance
Performance
Safety & Features
Safety & Features
Delivery Notice – Please Check Before Ordering
Delivery Notice – Please Check Before Ordering
We ship within the United Kingdom, European Union, and United States, subject to carrier availability and logistical constraints. We do not deliver to the following locations:
United Kingdom
- Northern Ireland (BT postcodes)
- Isle of Man
- Channel Islands (Jersey, Guernsey)
- Scottish Highlands & Islands (IV, HS, KW, ZE, KA27–KA28)
European Union & Europe
- Canary Islands
- Balearic Islands (Mallorca, Ibiza, Menorca)
- Corsica
- Sardinia
- Sicily
- Greek Islands
- Ceuta & Melilla
- Åland Islands
- Northern Sweden (remote Arctic regions)
- Northern Norway (remote Arctic regions)
United States
- Alaska (AK)
- Hawaii (HI)
- Puerto Rico (PR)
- Guam (GU)
- US Virgin Islands (VI)
If you’re unsure, our support team can confirm delivery availability before you order.
We reserve the right to refuse or cancel orders where:
- The delivery address is located in a remote or inaccessible region
- Carrier or regulatory restrictions (including lithium battery transport rules) prevent fulfilment
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