When agricultural operations grow in size and complexity, power demands grow too; and that’s where the RONK Rotoverter Type D rises to the occasion. Designed for applications for a single load, or multiple motors, up to 42 HP. The Rotoverter Type D is built to deliver consistent, efficient performance in grain elevators/dryers, fertilizer plants, pumps, and other critical farm or industrial operations that rely on single phase service.
This heavy-duty rotary phase converter is engineered to meet the challenges of high-load motor starting and continuous operation. It provides well-balanced power across all three legs, ensuring smooth motor operation and reducing mechanical wear. That means longer equipment life, lower maintenance costs, and improved overall efficiency.
Farmers and agribusinesses have trusted the Rotoverter Type D for decades because it’s built to last. Its sturdy design and durable components are built for outdoor environments and high-demand conditions; making it ideal for remote grain facilities and other agricultural sites where reliability is critical. With proper sizing and installation, the Rotoverter Type D keeps your equipment powered through harvest season and beyond.
When paired with RONK’s commitment to support and customer service, the Rotoverter Type D becomes more than just a product, it’s a long-term investment in productivity and peace of mind. Choose the Rotoverter Type D for proven performance, year after year.
Patented ROTOVERTER tap adjustments give you control over all three phases for balancing currents.
The reliability and safety of electrical systems have never been more crucial. RONK's American-designed and assembled products are durable, efficient, and built to last for decades.
Request a Quote
Series: ROTOVERTER
Model:
• Type 2D
• Type 2D-AS*
Input Voltage / Output Voltage: Single phase 240V / Three phase 240V
Rotary Base: Open drip-proof
NEMA 3R Capacitor Panels Provided: 2
Motor Ratings:
• Single motor: 1 HP to 40 HP
• Total HP: 1.4 HP to 42 HP
Series: ROTOVERTER
Model:
• Type 4D
• Type 4D-AS*
Input Voltage / Output Voltage: Single phase 480V / Three phase 480V
Rotary Base: Open drip-proof
NEMA 3R Capacitor Panels Provided: 2
Motor Ratings:
• Single motor: 1 HP to 40 HP
• Total HP: 1.4 HP to 42 HP
*Automatic Start Units are supplied with a contactor and associated controls to integrate with equipment that may cycle automatically from control circuitry containing timers, level or pressure sensors, etc., to bring the rotary transformer to speed before the load is energized, as required by NEC Article 455-21.
Converter Size: 1.4kVA
Type 2D | Type 2D-AS: 240V
Type 4D | Type 4D-AS: 480V
Largest Single Three Phase Motor: 1
Total Three Phase Motors: 1.4
Single Phase Input FLA: (10)240V | (5)480V
—-----------------------------------------------
Converter Size: 2.1kVA
Type 2D | Type 2D-AS: 240V
Type 4D | Type 4D-AS: 480V
Largest Single Three Phase Motor: 2
Total Three Phase Motors: 2.1
Single Phase Input FLA: (15)240V | (8)480V
—-----------------------------------------------
Converter Size: 3.5kVA
Type 2D | Type 2D-AS: 240V
Type 4D | Type 4D-AS: 480V
Largest Single Three Phase Motor: 3
Total Three Phase Motors: 3.5
Single Phase Input FLA: (22)240V | (11)480V
—-----------------------------------------------
Converter Size: 5.3kVA
Type 2D | Type 2D-AS: 240V
Type 4D | Type 4D-AS: 480V
Largest Single Three Phase Motor: 5
Total Three Phase Motors: 5.3
Single Phase Input FLA: (30)240V | (15)480V
—-----------------------------------------------
Converter Size: 8kVA
Type 2D | Type 2D-AS: 240V
Type 4D | Type 4D-AS: 480V
Largest Single Three Phase Motor: 7.5
Total Three Phase Motors: 8
Single Phase Input FLA: (42)240V | (21)480V
—-----------------------------------------------
Converter Size: 12kVA
Type 2D | Type 2D-AS: 240V
Type 4D | Type 4D-AS: 480V
Largest Single Three Phase Motor: 10
Total Three Phase Motors: 12
Single Phase Input FLA: (54)240V | (27)480V
—-----------------------------------------------
Converter Size: 16kVA
Type 2D | Type 2D-AS: 240V
Type 4D | Type 4D-AS: 480V
Largest Single Three Phase Motor: 15
Total Three Phase Motors: 16
Single Phase Input FLA: (70)240V | (35)480V
—-----------------------------------------------
Converter Size: 21kVA
Type 2D | Type 2D-AS: 240V
Type 4D | Type 4D-AS: 480V
Largest Single Three Phase Motor: 20
Total Three Phase Motors: 21
Single Phase Input FLA: (90)240V | (45)480V
—-----------------------------------------------
Converter Size: 28kVA
Type 2D | Type 2D-AS: 240V
Type 4D | Type 4D-AS: 480V
Largest Single Three Phase Motor: 25
Total Three Phase Motors: 28
Single Phase Input FLA: (120)240V | (60)480V
—-----------------------------------------------
Converter Size: 35kVA
Type 2D | Type 2D-AS: 240V
Type 4D | Type 4D-AS: 480V
Largest Single Three Phase Motor: 30
Total Three Phase Motors: 35
Single Phase Input FLA: (150)240V | (75)480V
—-----------------------------------------------
Converter Size: 42kVA (NOT UL LISTED)
Type 2D | Type 2D-AS: 240V
Type 4D | Type 4D-AS: 480V
Largest Single Three Phase Motor: 40
Total Three Phase Motors: 42
Single Phase Input FLA: (180)240V | (90)480V
1.4 kVA | 72 lbs.
2.1 kVA | 92 lbs.
3.5 kVA | 100 lbs.
5.3 kVA | 128 lbs.
8 kVA | 248 lbs.
12 kVA | 251 lbs.
16 kVA | 294 lbs.
21 kVA | 329 lbs.
28 kVA | 450 lbs.
35 kVA | 486 lbs.
42 kVA | 590 lbs.
