Schneider Electric 5.0A, 3.0A, 2.0A manual Adjustable Rating Plug Replacement, Rating Plug Removal

48049-136-05	Micrologic™ 2.0A, 3.0A, 5.0A, and 6.0A Electronic Trip Units
Rev. 01, 07/2012	Section 5—Adjustable Rating Plug Replacement

Section 5—Adjustable Rating Plug Replacement

NOTE: To select correct replacement rating plug, see the product catalog.

NOTE: If adjustable rating plug is removed, the circuit breaker will default to a long-time pickup rating of 0.4 x In and a long-time delay at whatever setting was selected before the rating plug was removed.

DANGER

HAZARD OF ELECTRIC SHOCK, EXPLOSION, OR ARC FLASH

•Apply appropriate personal protective equipment (PPE) and follow safe electrical work practices. See NFPA 70E or CSA Z462.

•This equipment must be installed and serviced only by qualified electrical personnel.

•Turn off all power supplying this equipment before working on or inside equipment. Follow instructions shipped with circuit breaker to disconnect and reconnect circuit breaker.

•Replace all devices, doors and covers before returning equipment to service.

Failure to follow this instruction will result in death or serious injury.

ENGLISH

Rating Plug Removal

1. Open circuit breaker contacts:

Figure 48: Remove Adjustable Rating Plug

B

C

	— For Masterpact NT and NW circuit
	breakers, press the “Push to open”
	button on the circuit breaker.
	— For other circuit breakers, move handle
	to the off (O) position.
2.	Open switch cover (A).
3.	Unscrew adjustable rating plug mounting
	screw (B).
4.	Remove adjustable rating plug (C).

06133205

06133221

A

long time			tr	4	8		12
Ir .7	.8	.9	(s)				16
			2				20
.6		.95	1				24
		.98		.5	@	6 Ir
.5	x In	1
.4
short time			tsd	.4	.4		.3
Isd	4	56	.3				.2
3							.1
2.5		8	.2.1			t	0
2		10	on		I
1.5 x Ir					delay
setting

alarm
instantan	eous

I i	4	5
2.5	3	6
		8
2		10
1.5 x In

06133222

							instantane			ous
							I i	4	5
short tim				.4		.3	3		6
							2.5
Isd	4		.3			.2			8							alarm
		5				.1	2		10
3		6	.2.1				1.5	x In		long time			(s)tr		8	1216
2.5		8		2	t	0								4
2		10	on	I						Ir	.8	.9	2			20
1.5	x Ir			delay						.7		.95
										.6		.98	1	.5		24
setting										.5		1			@ 6 Ir
										.4	x In

New Rating Plug Installation

1.Inspect mounting area for debris and contamination.

2.Gently push in new adjustable rating plug

(A).

3.Tighten adjustable rating plug mounting screw (B).

4.Set the switches on the trip unit (see Section 3 —Operation).

5.Close switch cover (C).

Figure 49: Install New Adjustable Rating Plug

06133223	A	06134244	B
			alarm

															long time			tr	4	8		12
														Ir		.8	.9	(s)				16
															.7			2				20
														.6			.95	1				24
																	.98		.5	@	6 Ir		instantan			eous
														.5		x In	1
					instantaneous										.4								I i	4	5
															short time			tsd	.4	.4		.3.2	2.53			68
		t time			I i	4	5							Isd		4	5	.3				.1	2		10
shor			tsd	2	2.5		8							2.5			8	.2.1		I	t	0		x In
Isd	4	56	.3	1	2		10							alarm	2		10	on
3					1.5 x In										1.5					delay
2.5			.2	0				long time			tr		8	12		x Irg
2		8	.1	I2t			test	Ir	.8	.9	(s)	4		16	settin
1.5		10	on	delay				.7		.95	2			20
	x Ir							.6		.98	1			24
setting								.5		1		.5	@ 6 Ir
								.4	x In

C

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