CURTIS Model: 1221M-6701
Norminal Battery Voltage (Volts): 72V (default setting), 48V or 60V
2 Minute Current Rating (amps): 550
5 Minute Current Rating (amps): 375
1 Hour Current Rating (amps): 225
Plug Braking (A2 Busbar): Yes
PWM operating frequency: 15.6 kHz
Electrical isolation to heatsink (min.): 500 VAC
KSI input current (no contactors engaged):
70 mA without programmer
130 mA with programmer
Logic input current: < 2 mA
Status LED output current (max.): < 2 mA
Operating ambient temperature range: -40°C to 50°C
Storage ambient temperature range: -40°C to 85°C

High-frequency switching and ultra-low voltage drops provide high efficiency and silent operation.
Simple mounting and wiring with push-on connectors for control signals and plated solid copper buses for power connections.
Compatible with either a two-wire potentiometer or a voltage throttle.
Throttle fault protection circuitry disables controller if throttle wires become open.
High pedal disable feature prevents controller operation if key is turned on while throttle is applied.
Plug braking diode internal to controller.
Thermal protection and compensation circuit provides constant current limit over operating range and during under/over temperature cutback; no sudden loss of power under any thermal conditions.
Undervoltage cutback function protects against low battery voltage, including low voltage caused by external loads.
Rugged anodized aluminum extruded housing meets IP65 environmental sealing standards for use in harsh environments.

Hefei Huanxin Technology Development Co., Ltd. has been devoting ourselves to developing and manufacturing and other since 2004. We are located in Hefei, Anhui Province, with convenient transportation access. We employ over 101 - 200 People staff members. We have achieved great improvement since our company was founded in 2004. We abide by the motto of Firstclass quality, Reasonable price, Best service and Professional product support.

1. OEM Manufacturing welcome: Product, Package...
2. Sample order
3. We will reply you for your inquiry in 24 hours.
4. after sending, we will track the products for you once every two days, until you get the products. When you got the
goods, test them, and give me a feedback.If you have any questions about the problem, contact with us, we will offer
the solve way for you.

Q1. Can I have a sample order?
A: Yes, we welcome sample order to test and check quality.

Q2. What about the lead time?
A: Sample needs 3-5 days.

Q3. Do you have any MOQ limit?
A: Low MOQ, 1pc for sample checking is available

Q4. How do you ship the goods and how long does it take to arrive?
A: We usually ship by DHL, UPS, FedEx or TNT. It usually takes 3-5 days to arrive. Airline and sea shipping also optional.

Q5. How to proceed an order?
A: Firstly let us know your requirements or application.
    Secondly We quote according to your requirements or our suggestions.
    Thirdly customer confirms the samples and places deposit for formal order.
    Fourthly We arrange the production.

Q6. Is it OK to print my logo on the product?
A: Yes. Please inform us formally before our production and confirm the design firstly based on our sample.

Q7: Do you offer guarantee for the products?
A: Yes, we offer 2years warranty to our products.

Q8: How to deal with the faulty?
A: Our products are produced in strict quality control system and the defective rate will be less  than 0.2%.