Square D Digest 179

I-Line™ Panelboards—600 Vac, 250 Vdc

Molded Case Circuit Breakers for I-Line Panelboards

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Refer to I-Line Power Distribution Panelboards Table 9.136: M-Frame 800 A, Basic Electronic Trip System Type ET 1.0 [69] Factory-Sealed Trip Unit (PowerPacT M-frame circuit breakers utilize 9 in. of the available I-Line bussing.) Electronic Trip Unit Ampere Rating Adjustable Instantaneous Trip Range Interrupting Rating

Terminal Wire Range

Type

High

Function

Low

G

J

2P, 600 Vac 50/60 Hz [70]

(3) 3/0 through 500 kcmil Al orCu (3) 3/0 through 500 kcmil Al orCu (3) 3/0 through 500 kcmil Al orCu (3) 3/0 through 500 kcmil Al orCu

MGA26400()

MJA26400()

400A

800

4000

Fixed Long-time, Adjustable Instantaneous Trip

Basic

MGA26600()

MJA26600()

600A

1200

6000

3P, 600 Vac 50/60 Hz

400A

800

4000

MGA36400

MJA36400

Fixed Long-time, Adjustable Instantaneous Trip

Basic

600A

1200

6000

MGA36600

MJA36600

Table 9.137: M-Frame 800 A, Adjustable Amperage Electronic Trip Unit Electronic Trip Unit Adjustable Long Time Settings Adjustable Instantaneous

Interrupting Rating

Terminal Wire Range

Type

High

Function

Low

G

J

2P, 600 Vac 50/60 Hz [70] Basic 3P, 600 Vac 50/60 Hz Basic

Adjustable Long time, Adjustable Instantaneous Trip Adjustable Long time, Adjustable Instantaneous Trip

MGA26800()E10 MJA26800()E10 (3) 3/0 through 500 kcmil Al orCu

300–800

2x

10x

9 PANELBOARDS

300–800

2x

10x

MGA36800E10

MJA36800E10 (3) 3/0 through 500 kcmil Al orCu

L-frame accessories, see PowerPact Accessories in Section 7 of the Digest. L-frame dimensions, see Molded Case Circuit Breaker Dimensions in Section 7 of the Digest. L-frame optional lugs, see Mechanical Lugs in Section 7 of the Digest.

M-frame accessories, see PowerPact Accessories in Section 7 of the Digest. M-frame dimensions, see Molded Case Circuit Breaker Dimensions in Section 7 of the Digest. M-frame optional lugs, see Mechanical Lugs in Section 7 of the Digest.

Table 9.138: Automatic Molded Case Switches—600 Vac, 50/60 Hz Ampere Rating 2-pole 3-pole Catalog Number [70] Catalog Number 240Vac

Withstand Rating [71]

Trip Point Amperes

Terminal WireRange

480Vac

600Vac

AC

PJA26000S60( ) PJA26000S80( ) PJA26000S10( ) PJA26000S12( )

600A 800A

PJA36000S60 PJA36000S80 PJA36000S10 PJA36000S12

100 100 100 100

65 65 65 65

25 25 25 25

10000 10000 10000 10000

(3) 3/0 through 500 kcmil Al or Cu (4) 3/0 through 500 kcmil Al or Cu

1000A 1200A

Table 9.139: PowerPacT P- and R-frame Interrupt Ratings Codes Voltage P-frame Interrupt Rating

R-frame Interrupt Rating

G

J

K

L

G

J

K

L

240Vac 480Vac 600Vac

65 kA 100 kA 65 kA 125 kA 65 kA 100 kA 65 kA 125 kA

35kA 65kA 18kA 25kA

50 kA 100 kA 35 kA 65 kA 50 kA 25 kA 18 kA 25 kA

65kA 100kA 65kA 50kA

PG/PJ/PK/PL 2– and 3–pole

RG/RJ/RK/RL 2– and 3–pole

[69] The ET 1.0 trip unit cannot be field replaced. The Basic Electronic ET1.0 trip unit (offered in 400 A and 600 A only) does not allow adjustment of the long time trip point setting. It is considered an electronic equivalent of a thermal-magnet circuit breaker. [70] Fill in parentheses with the following phase connection options: (2) for AC or (5) for CA. [71] The withstand rating is the fault current, at rated voltage, that the molded case switch will withstand without damage when protected by a circuit breaker with an equal ampere rating.

9-57

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