Control Catalog Flippingbook

NEMA FULL VOLTAGE POWER DEVICES, CONTROL SECTION 1

1-50

— CR387, CR487 mag-break magnetic starters Nonreversing, combination, NEMA type 1, 3R, 12, 4/4X 200 horsepower maximum NEMA sizes 0-5 600 volts maximum 50/60 hertz

Application The CR387/487 nonreversing starters are designed for more accurate fault protection for motor circuits by utilizing Spectra™ Mag-Break motor circuit protectors for sizes 0-4 and Type TJC for size 5. Spectra™ features - Spectra™ Mag-Break motor circuit protector—provides protection against faults. Has adjustable trip. - Meets NEC standards—continuous current ratings and adjustable instantaneous trip ranges meet NEC standards on motor full-load and locked rotor currents. - Can eliminate nuisance tripping and provide fault protection— by setting the Mag-Break instantaneous trip point just above transient motor inrush current. - Less than one cycle clearing time—to open and clear a fault. Example: A size 2 combination starter is required to control a 15-hp, 230-Volt, 60-Hertz nonreversing motor with FLA of 42.0. The starter will include a Mag-Break motor circuit protector, 230-240 Volt, 60-Hertz coil, and a three-leg block overload. Order 1— CR387DT03MJ1AAAAA and 3—CR123C460B heaters. 2. Order special features or forms not listed by complete description using a listed Product Number as reference. Example: Similar to CR387DT03MJ1AAAAA except with OFF-ON selector switch in cover. 3. 50 Hertz starters 50 Hertz forms (at standard voltages) shown in table for 60 Hertz. See page 1-4 for 380-415 Volt horsepower ratings. 4. Product notes Motor full-load current should not exceed continuous ampere rating of starter. Order heaters by complete Product Number from appropriate heater tables on pages 1-153 to 1-159. Reference publications Instructions NEMA Size Publication Number 0,1 GEH-5190 2 GEH-4774 3 GEH-4806 4 GEH-4807 5 GEH-4839 Product number selection instructions 1. Order by complete Product Number.

Typical CR387 starter with mag-break protector with current limiter