Delta VFD185C43A-21 25HP Variable Speed Drive Braking Chopper

Delta VFD185C43A-21 C2000 Series AC Drive

The VFD185C43A-21 is a Delta C2000 series medium-power variable frequency drive. This 25 HP unit is designed for demanding industrial applications requiring robust motor control. It includes a built-in braking chopper for controlled deceleration and energy dissipation.

Core Technical Specifications

• Brand & Model: Delta VFD185C43A-21
• Product Series: C2000
• Input Power: 3-Phase, 460V AC
• Output Power: 25 HP (18.5 kW)
• Output Current (Heavy Duty): 38 A
• Frame Size: C
• Key Feature: Built-in braking chopper (requires external braking resistor).
• Protection Rating: IP20

Physical Data & Features

• Weight: 21.56 lbs (9.78 kg)
• Dimensions: 210 mm x 250 mm x 400 mm (8.27" x 9.84" x 15.75")
• Built-in EMC Filter: No (external filter may be required for compliance).
• Built-in DC Reactor: No
• Communication: CANopen card not included (optional).
• Application: Ideal for larger pumps, fans, conveyors, mixers, and other 25HP motor applications needing variable speed and torque control.

Frequently Asked Questions

• Q: What does the Frame Size "C" indicate?
  A> It refers to the physical size and power handling capacity of the drive. Frame Size C is larger than B, accommodating the higher current (38A) and thermal dissipation requirements of this 25HP model.
• Q: Can this drive be used for constant torque applications?
  A> Yes. The "Heavy Duty" current rating of 38A is specifically for constant torque loads like conveyors or positive displacement pumps where full torque is needed at low speeds.
• Q: What is needed to complete the braking system?
  A> You must select and install an external dynamic braking resistor matched to your motor's inertia and stopping cycle requirements to work with the built-in chopper.