Catalogs > Industrial Controls Catalog > Motor Control, NEMA > Contactors, Starters, and Overload Relays > AC Contactors and Starters > Bulletin 520 Multi-Speed

Bulletin 520 Multi-Speed

Introduction

Standards Compliance and Certifications

Catalog Number Explanation

Product Selection

Typical Wiring Diagrams

Modifications for Non-Combination Devices

Accessories

Specifications

Full Load Motor Currents

Approximate Dimensions

Renewal Parts

Product Overview

Bulletin 520F
Size 0, with Eutectic Alloy Overload Relay
2-Speed, Consequent Pole
Open Type without Enclosure

Bulletin 520

NEMA sizes 0…7
Exceptional electrical life
UL Witnessed Type 2 Coordination
Dependable coil operation
Eutectic alloy overload relays: Class 10, 20, or 30
Solid-state overload relays: Class 10, 15, 20, or 30
Vertically arranged available — Bulletin 520V sizes 0…5

Bulletin 520 multi-speed starters are designed for the control of two speed squirrel cage motors of either consequent pole or separate winding types. These starters are available for constant horsepower, constant torque or variable torque, three-phase motors. Multi-speed motor starters are commonly used on machine tools, fans, blowers, refrigeration compressors, and many other types of equipment.
All Bulletin 520 multi-speed starters are available with Bulletin 592 eutectic alloy relays as standard and solid-state overloads are optional for additional flexibility in motor protection. Bulletin 520V vertically arranged starters are available in Sizes 0…5, in the Open Type without Enclosure construction only.