New! Ronk's UL 1008 Manual Transfer Switch

Introducing Series 4+
Manual Transfer Switch

Ronk’s SERIES 4+ switches meet UL 1008 standard and provide economical, reliable, and safe transfer of loads between main power and an auxiliary source.

Ronk Electrical Industries

We are American Built.

We design and build electrical products so you can have safer, efficient and controlled use of power. We specialize in manufacturing phase converters, double-throw and transfer switches, power factor correction, and stray voltage isolators. American Built. Ronk Solid.

Learn More About Us
  • MSB200 L IMG 9452 closed front small

    Meter Socket Circuit Breaker - MSB200LEAABA

    200 A, Lever Bypass, 4 Jaws, Conduit KO (1) 1½ in. to 2 in. (2) 2 in. to 2½ in.

  • Roto con Center Pivot Rotary Phase Converter

    ROTO-CON® Center Pivot

    ROTO-CON® Type CP has been specifically designed to operate a wide variety of center-pivot irrigation systems. They are easily installed, require minimal maintenance, and will give you years of trouble-free service.

  • Fused Disconnect Double Throw 400 A only 025 R

    Fused Disconnect Double-Throw Switch 7225

    200 A, Fused Disconnect Double-Throw Switch

Latest News

Notice of Price Adjustment

Effective Monday, March 15, 2021 Ronk Electrical Industries has implemented on average an 8% price increase. 


Featured Products

Roto Con II 250

ROTO-CON® Rotary Phase Converter Standard Type P

ROTO-CON® rotary converter provides smooth, reliable 3-phase power from single-phase lines. Best suited for operating motors that do not operate continuously at high load levels and for non-motor loads.

Learn More

Add a phase3

ADD-A-PHASE® Power Converter Type SUB

Type SUB ADD-A-PHASE® static three-phase converter is designed for deep well submersible pump motors and submersible wastewater pump motors.

Learn More


BLOCKER® Stray Voltage Isolator SVI-50 11V

Reduces stray voltage. Blocking voltage 11V

Learn More

Power Factor rotate without lights

Power Factor Correction Capacitors - PFC 2PF11

Power Factor Correction Capacitors – 11 KVAR, 240 V, No Fuse Block, UL Listed

Learn More

Featured Industries



Reliability and safety of electrical systems have never been more important. Ronk's American designed and assembled products are durable, efficient and last for decades.

This site uses cookie to ensure you get the best experience on our website. Learn More Accept