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7-84

Circuit Breaker Enclosures

Enclosures

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Class 610

LA/LH/Q4 Circuit Breaker Enclosures

LA/LH/Q4 Thermal-Magnetic Circuit Breaker Enclosures

LA400AWK

LA400S

LA400R

The enclosures for the LA/LH/Q4 thermal-magnetic circuit breakers are UL listed and

CSA certified. The enclosures are suitable for service entrance equipment when neutral

assembly is installed. The short circuit ratings of these enclosed circuit breakers are

equal to the interrupter rating, at the supply voltage marked on the circuit breaker

installed.

The LA400R enclosure has a blank top end wall and requires field cut openings. For

details and hub catalog numbers see Digest Section 3.

Table 7.173: LA/LH/Q4 Thermal-Magnetic Circuit Breaker Enclosures

Circuit Breaker Enclosure

Neutral

Assembly Kit

Service

Ground Kit

Cat. No.

Prefix

Rating

Poles Cat. No. Cat. No. Cat. No. Cat. No. Cat. No.

NEMA 1

Flush

NEMA 1

Surface

NEMA 3R

LAL, LHL,

Q4L

125–225 A

2, 3

LA400F[24] LA400S[24]

LA400R

SN225KA

PKOGTA2

225–400 A 400SN

LAL 125–400 3 —

LA400LS [25]

[26][27][28]

— SN400LA

NEMA 4, 4X,

5 [29] Type

304 Stainless

Steel [30]

NEMA 12K

With

Knockouts

NEMA 12/3R

Without

Knockouts

[30]

LAL, LHL,

Q4L

125–225 A

2, 3

LA400DS[27]

—

LA400AWK

[27]

SN225KA

PKOGTA2

225–400 A SN400LA

Enclosures for Special Applications

Hazardous Locations: NEMA 7 And NEMA 9 Circuit Breaker Enclosures

The NEMA 7 and 9 enclosures are cULus listed unless otherwise noted. They are rated

for use in hazardous locations as defined in NEC Article 500. The short circuit current

rating of the enclosed circuit breakers is equal to the rating of the circuit breaker installed

unless otherwise noted. They are suitable for use as service entrance equipment when

neutral is installed. Enclosures require the use of 75°C copper wire only. The NEMA 7

enclosures are suitable for rainproof applications when the included PKDB1 breather

and drain kit is installed.

Table 7.174: NEMA 7 and NEMA 9 Circuit Breaker Enclosures;

Thermal-Magnetic B-Frame and PowerPact J-Frame Cicuit Breakers

Circuit Breaker

Enclosure Catalog Number

Neutral

Assembly

Kit Cat. No.

Service

Ground Kit

Cat. No.

Threaded

Conduit

Provisions,

Inches

Cat. No.

Prefix

Rating

Poles

NEMA 7/9

Cast

Aluminum

[31][32]

NEMA 9 Cast

Aluminum

[32]

BKL 15–30 A 2

B100X — 100SNA Included 1 1//4 in.

BDL, BGL,

BJL

15–100 A

2, 3

JDL, JGL

150–225 A

2, 3

J225X [33][34] J225Y [33][34]

225SNA Included 2 1/2 in.

Enclosed Molded Case Switches

For information on enclosed molded case switches, see Supplemental Digest Section 3.

MINIATURE AND MOLDED CASE

CIRCUIT BREAKERS

[24] Enclosures are provided with the Handle Padlock Attachment (HPALM) for field installation to lock the circuit breaker in the “ON” or “OFF” positions.

[25] Use copper conductors only.

[26] Maximum short circuit and voltage is 30 kAIR at 480 Vac.

[27] LAL or LHL circuit breakers with an MB or MT suffix are not compatible with these enclosures: LA400DS, LA400AWK, and LA400LS.

[28] Enclosure cover has an integral padlock provision to provide a means to lock the circuit breaker in the “ON” or “OFF” position.

[29] Complete rating is NEMA 3, 3R, 4, 4X, 5, and 12.

[30] For NEMA 3R applications, remove drain screw from bottom endwall.

[31] NEMA 7 — Indoor Hazardous Locations — Division 1 and 2, Class I, Groups C and D; Class II, Groups E, F and G; Class III

[32] NEMA 9 — Indoor Hazardous Locations — Division 1 and 2, Class ii, Groups E, F and G; Class iii

[33] Short circuit current rating: 65 kAIR at 240 Vac, 25 kAIR at 480 Vac, and 18 kAIR at 600 Vac

[34] Not cULus listed due to wire bending space.

9/13/2019