Schneider Electric 2.0A External Power Supply, Hazard Of Shock, Arc Flash Or Equipment Damage

48049-136-05	Micrologic™ 2.0A, 3.0A, 5.0A, and 6.0A Electronic Trip Units
Rev. 01, 07/2012	Section 1—General Information

The following will be powered and functional with external power:

•All of the above functions which are functional without external power.

•Ammeter and bar graph displays are functional with or without current flowing through the circuit breaker. With current flow between 0 and 20% of sensor value, the ammeter may not be accurate.

•Trip settings and max. current readings can be accessed on the display be pressing the navigation buttons with or without current flowing through the circuit breaker.

•Ground-fault push-to-trip button works for testing ground fault with or without current flowing through the circuit breaker.

•Optional Modbus communications are functional, using a separate 24 Vdc power supply for the circuit breaker communications module. This separate 24 Vdc power supply is required to maintain the isolation between the trip unit and communications.

The ground-fault push-to-trip is also functional if a Hand-Held Test Kit or

Full-Function Test Kit is powering the trip unit.

External Power Supply

The trip unit display can be powered by a 24 Vdc external power supply.

ENGLISH

CAUTION

HAZARD OF SHOCK, ARC FLASH OR EQUIPMENT DAMAGE

Trip unit and communication module must use separate power supplies.

Failure to follow this instruction can result in personal injury or equipment damage.

Table 7:	Power Supply Specifications
Function		Specification
Power for Trip Unit Alone		24 Vdc, 50 mA
Minimum Input-to-Output Isolation		2400 V
Output (Including Max. 1% Ripple)		±5%
Dielectric Withstand (Input/Output)		3 kV rms
		Connections UC3
Connections		F1 (-)	24 Vdc
		F2 (+)

Power supply is used for graphic scree display when the circuit breaker is open or not carrying current.

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