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VOTOL EM350S is a very-high-power 48-72V sinewave controller with 350A rated DC / 600A boost / 1300A peak phase (≤43.2kW max power). 48-MOSFET design suited for 10-12kW PMSM/BLDC motors in extreme e-moto builds. Features 200% flux weakening, IP67 waterproofing, ≥92% max efficiency. Uses VOTOL's New Version architecture: TE Ampseal 23-pin main signal connector + screw terminals. Dual-protocol: SIAECOSYS LIN and CAN BUS displays supported. Programmable via PC with the V2 CAN USB cable.

In brief: 48–72V controller. 350A continuous. 600A peak. Sinewave, dual mode, regen, field weakening support. From $538 across 4 sellers.

Specs verified Sep 12, 2026

Price History

Price History
Price changes tracked by the crawler

Current best price $616.64. Over the past 90 days: low $615.77, high $616.64, average $615.83 — about average.

  • AliExpress - SIA Tech Store
Jul 7Jul 8Jul 9Jul 10Jul 11Jul 12Jul 13Jul 14Jul 15Jul 16Jul 17Jul 18Jul 19Jul 20$615.75$616.00$616.25$616.50$616.75

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Specifications

Type

VESC Based
No
Cooling
Air

Electrical

Voltage Range
48–72V
Continuous Amps
350A
Peak Amps
600A
Max Phase Amps
1300A

Motor Features

Regen Support
Yes
Drive Mode
Sinewave
Sensor Mode
Dual Mode
Field Weakening
Yes
Self-Learning
No
Dual Motor Support
No
Controller Pairing
No

Inputs

Throttle Support
Yes
PAS Support
No

Display

Supports Display
Yes
Requires Display
No
Protocols
SiAECOSYS ONE-LIN, SiAECOSYS CAN BUS

Power Switch

Supports Power Switch
Yes
Requires Power Switch
Yes
Requires Pre-charge
Yes

Programming

Via Display
No
Via Phone
No
Via PC
Yes

Physical

Weight
2.8 kg
Dimensions (L×W×H)
220mm × 161mm × 90mm
IP Rating
IP67

Ports & Connectors

Power Input2-position Screw Terminal Block
Power
PinWire colorFunction
1RedBattery +
2BlackBattery -
Phase Wires3-position Screw Terminal Block
Motor Phase
PinWire colorFunction
1YellowPhase A
2GreenPhase B
3BluePhase C
Main Signal Connector (Ampseal 23-pin)
E-lock
Power Switch
PinWire colorFunction
1RedBattery +
2OrangePower Switch Signal
LIN1 wire
Display
PinWire colorFunction
1WhiteOne-Wire Comm
Mode (1,2,3)
Display
PinWire colorFunction
1Green / WhiteGear Low
2Yellow / WhiteGear Medium
3Black / WhiteGear High
R mode
Display
PinWire colorFunction
1Gray / WhiteGear Reverse
2BlackGround
S mode
Display
PinWire colorFunction
1Yellow / WhiteGear Sport
Throttle
Throttle
PinWire colorFunction
1Red5V Power
2BlackGround
3GreenThrottle Signal
High Brake
Brake
PinWire colorFunction
1PurpleBrake Signal (High)
P mode
Brake
PinWire colorFunction
1Brown / WhiteParking / E-Brake
Program Debugging
UART
PinWire colorFunction
1BlackGround
2Pink5V Power
3OrangeUART TX
4BlueUART RX
Main Connector

Included Components

Frequently Asked Questions

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