Control_Flippingbook_July 2024

1-178

NEMA FULL VOLTAGE POWER DEVICES, CONTROL SECTION 1

— CR305, CR385 magnetic contactors Factory-installed modifications

Contactor modifications — factory installed The general information at the top of page 1-179, regarding factory-installed modifications, also applies to those listed in the tables below.

Type of installation/ contactors

Item no.

Enclosure type

Modifications

Auxiliary relays mounted in CR305

14 1

Control relay, four-pole (convertible) unwired (specify coil voltage)

1, 3R, 12 4/4X 1, 3R, 12

Time-delay relay, unwired, pneumatic—1 to 60 seconds, 1 NO-1 NC (specify TDD or TDE and coil voltage) 3

15 1

4/4X

16 1 17 1

Timing relay, motor driven, unwired (specify voltage and timing range) 3

Any Any

Phase loss, phase reversal, three-phase, undervoltage relay (starting and running protection, specify voltage) Magnetic contactor (specify number of NO or NC) — single speed, nonreversing:

Any

Auxiliary contacts mounted in CR305

19 1

four maximum, sizes 0, 1 five maximum, size 2-6

reversers and two-speed, two winding: two maximum, per contactor, sizes 0-6 two-speed, one winding: one on left contactor, two on right contactor, size 0, 1 two maximum per contactor, sizes 2-6

1 NEMA Type 1 enclosures require oiltight pilot devices when this modification is used with NEMA contactor sizes 0, 1, and 2. Only oiltight pilot devices will fit the oversized enclosure required. 2 Not available in NEMA size 00. Use size 0 contactor modification. 3 Requires 100 VA extra capacity control transformer.

Type of installation/ contactors

Item no.

Enclosure type

Modifications

Metering mounted In CR305

27

Elapsed time meter

1, 3R, 12 4/4X

Any

Enclosure CR305

30

Space heater 2 50 watts—NEMA size 0-4 contactor/starter 100 watts—NEMA size 5 contactor

Misc. mounted on CR305

31 32 33 34 35

Operating coil surge suppressor (120 V/60 Hz)

Any Any Any Any Any

Insulated neutral lug

Ground lug

Terminal block, (product number CR151B) 30 A, unwired (per point) (specify points)

Power factor correction capacitor terminals

1 Not available in NEMA size 00. Use Size 0 contactor modification. 2 If connected to control circuit transformer, 115-volt heater requires an extra capacity transformer for size 0-1 and size 5.