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Combination Starters—NEMA Rated

Class 8538, 8539 / Refer to Catalog 8538CT9701

Application Data

Table 16.91:

Class 8539—UL Listed Short Circuit Ratings

MAG-GARD® Motor Circuit Protector Type
NEMA Size	Voltage	Enclosure	Available Amperes RMS Symmetrical
0 & 1, 2 Size 3 Type SE●41 & SE●51 Only (GJL)	0–480	Standarda and Oversize	100,000
0 & 1 (FAL)	0–480	Standarda and Oversize	22,000
0 & 1 (FAL)	481–600	Standarda and Oversize	10,000
0 & 1, 2 Size 3 Type SE●41 & SE●51 Only (GJL)	481–600	Standarda and Oversize	10,000
0–2 with Current Limiting Module	600	Oversize	100,000
0–3 with Current Limiting Module	600	Standarda	100,000
0–3	600	NEMA 7 & 9	5,000
2	600	Oversize	22,000
2–6	600	Standarda	22,000
4 & 5	600	NEMA 7 & 9	10,000
7	0–480	Standarda	30,000
7	481–600	Standarda	22,000

a	Standard enclosure includes non-oversize NEMAs 1, 4 & 4X Stainless, and 12.

Table 16.92:

Table 1: MAG-GARD Trip Range

Suffix Number	Range (A)	Suffix Number	Range (A)	Suffix Number	Range (A)	Suffix Number	Range (A)
M01	9–33	11M	8–28	25M	625–1250	33M	1500–3000
M02	21–77	12M	18–70	26M	750–1500	35M	1750–3500
M03	45–165	13M	50–180	29M	875–1750	36M	2000–4000
M04	90–330	15M	100–350	30M	1000–2000	40M	2500–5000
M05	150–550	16M	150–580	31M	1125–2250	42M	3000–6000
M06	225–825	18M	300–1100	32M	1250–2500	44M	3500–7000

The MAG-GARD adjustable trip range is determined by the suffix of the circuit breaker catalog number. Table 16.92 indicates the trip range which corresponds to a given suffix number. The MAG-GARD Motor Circuit Protector should be adjusted to a level just above Locked-Rotor Current of the motor. This setting will provide optimum overcurrent protection for the motor. For more information on MAG-GARD instantaneous trip circuit breakers, refer to the MAG-GARD circuit breaker section of this Catalog.

Table 16.93:

Class 8539—UL Listed Short Circuit Ratings

Thermal Magnetic Circuit Breaker Type
NEMA Size	Voltage	Enclosure	Available Amperes RMS Symmetrical
0-3	600	Standard b	5,000
4 & 5	600	Standard b	10,000
6	600	Standard b	18,000
7	0-480	Standard b	30,000
7	481-600	Standard b	22,000

b	Standard enclosure includes non-oversize NEMAs 1, 4 & 4X Stainless, and 12.

Table 16.94:

Class 8538—UL Listed Short Circuit Ratings

NEMA Size	NEMA Fuse Class	Enclosure	Available Amperes RMS Symmetrical
0–3	Class H or K	Standard c	5,000
0–3	Class R	Standardc	100,000
0–2	Class H or K	Oversize	5,000
0–2	Class R	Standard	100,000
4–5	Class H or K	Standard c	10,000
4–5	Class R	Standard c	100,000
6	Class H or K	Standard c	18,000
6	Class R	Standardc	100,000

c	Standard enclosure includes non-oversize NEMAs 1, 4 & 4X Stainless, and 12.

Table 16.95:

Table 2: Motor Code Letter Table

Horsepower	Motor Code Letters
1/2 or less	A-L
3/4–1-1/2	A-K
2–3	A-J
5–25	A-H
30–125	A-G
150 or more	A-F

The combination starter selection tables on pages 16-34–16-35 are suitable for motors with Locked-Rotor Current letters per NEC Table 430-7(b) as listed in Table 16.95. For other motors a special thermal magnetic circuit breaker with adjustable magnetic trip settings for the specific motor is required. When ordering for these special applications, specify the motor horsepower, voltage, frequency, full load current and code letter (or locked rotor current) to assure proper protection.

Table 16.96:

Terminals

NEMA Size	Type	Line Terminals on Disconnect			Power Terminals On Magnetic Starter			Control Terminals On Magnetic Starter
		Type of Lug	Wire Range		Type of Lug	Wire Range	Wires Per Terminal	Type of Lug