Motor Circuit Protectors and Motor Protector Circuit Breakers

Class 580, 585, 680, 685

Motor Circuit Protectors

Motor Circuit Protector

Motor Protector Circuit Breaker

Mag-Gard™ Motor Circuit Protectors (MCP) are instantaneous-trip magnetic-only circuit breakers. They have a single adjustment which simultaneously sets the magnetic trip level of each individual pole. Mag-Gard™ circuit breakers comply with NEC requirements for providing motor circuit protection when installed as part of a UL Listed combination controller having motor overload protection. Interrupting ratings are established for these UL Recognized Components only when they are used in combination with motor starters with properly sized overload relays and contactors.

All Mag-Gard circuit breakers will accept the same lugs and accessories as equivalent circuit breakers. Mag-Gard circuit breakers are available with I-Line construction [1]. High-interruption (H) construction Mag-Gard circuit breakers (LHL) are also available.

Magnetic Only   3 Pole, 600 Vac, 50/60 Hz [1]—Three Device Solutions [2]

Ampere Rating

Trip
Unit

Adjustable [3]
Trip Range (A)

250 Vdc Multiplier

Cat. No.

LAL

400

 500–1000 A

 750–1600 A

1000–2000 A

1125–2250 A

1250–2500 A

1500–3000 A

1750–3500 A

2000–4000 A

High = 1.2

Low = 1.4

LAL3640022M

LAL3640028M

LAL3640030M

LAL3640031M

LAL3640032M

LAL3640033M

LAL3640035M

LAL3640036M

For PowerPact L- and P-Frames, an instantaneous-only version of the electronic trip circuti breaker is also available for motor circuit protection. These MCPs comply with NEC® requirements for providing short-circuit protection when installed as part of a Listed combination controller having motor overload protection.

Magnetic Only   3 Pole, 600 Vac, 50/60 Hz [1]—Three Device Solutions [2]

Sensor Rating

Trip
Unit

Adjustable [3]

Trip Range (A)

Interrupting Rating

G

J

L

R

PowerPact
L-Frame [1]

 400

1.3 M

500–1200%

LGL36400M37X

LJL36400M37X

LLL36400M37X

LRL36400M37X

 600

500–1200%

LGL36600M37X

LJL36600M37X

LLL36600M37X

LRL36600M37X

PowerPact
PJL, PLL [1]

 600

1200–10000 A

PJL36060M68

PLL34060M68

 800

1200–10000 A

PJL36080M68

PLL34080M68

1000

1500–10000 A

PJL36100M69

PLL34100M69

1200

1800–10000 A

PJL36120M70

PLL34120M70

Motor Protector Circuit Breakers


Motor protection circuit breakers provide built-in thermal and magnetic protection. They are used in two-device motor feeder solutions to provide protection against short-circuits, overloads, and phase unbalance.

H-Frame (150 A), J-Frame (250 A) and L-Frame (600 A) Electronic Motor Protector Circuit Breakers (UL Ratings)—
Two Device Solutions [4]

Electronic Trip Unit Type

Frame

Sensor Rating

Trip Unit

Full Load Amperes Range (FLA)

Isd (x FLA)

Interrupting Rating

G

J

L

R

Standard [5]

H-Frame

30

2.2 M

14–25

5-13 x FLA

HGL36030M38X

HJL36030M38X

HLL36030M38X

HRL36030M38X

50

14–42

5-13 x FLA

HGL36050M38X

HJL36050M38X

HLL36050M38X

HRL36050M38X

100

30–80

5-13 x FLA

HGL36100M38X

HJL36100M38X

HLL36100M38X

HRL36100M38X

150

58–130

5-13 x FLA

HGL36150M38X

HJL36150M38X

HLL36150M38X

HRL36150M38X

J-Frame

250

114–217

5-13 x FLA

JGL36250M38X

JJL36250M38X

JLL36250M38X

JRL36250M38X

L-Frame

400

2.3 M

190–348

5-13 x FLA

LGL36400M38X

LJL36400M38X

LLL36400M38X

LRL36400M38X

600

312–520

5-13 x FLA

LGL36600M38X

LJL36600M38X

LLL36600M38X

LRL36600M38X

Accessories see PowerPact™ Circuit Breaker Accessories and Supplemental Digest Section 3

Optional Lugs see Mechanical Lugs and Supplemental Digest Section 3

Dimensions see Molded Case Circuit Breaker Dimensions

Enclosures see Enclosures

To select combination starters and motor controllers using MCP’s meeting NEC Article 430, refer to Section 16.

Footnotes

  1. These electronic magnetic-only motor circuit protectors are available with I-Line constructions. Consult the factory.
  2. Three-device solutions are the traditional solutionss: motor circuit protector plus motor starter plus overload relay.
  3. UL magnetic trip tolerances are -20%/+30% from the nominal values shown.
  4. Two-device solutions (these electronic motor protector circuit breakers include short circuit and overload protection)
    —1 electronic motor circuit protector with a Micrologic 2.2 M plus
    —1 contactor
  5. The standard trip unit offers Class 5, 10 and 20 and phase unbalance or phase loss protection.

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