Brochure

PowerPact H-, J-, and L-Frame Circuit Breakers
Accessories and Auxiliaries
120
02/2016 © 2011–2016 Schneider Electric
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SDx and SDTAM Modules for Micrologic Trip Units
SDx and SDTAM are relay modules with two outputs. They send different signals depending on the
type of fault. They may not be used together.
SDx Module
The SDx module remotely monitors the trip or alarm conditions of PowerPact H-, J-, and L-frame circuit
breakers equipped with electronic protection.
An SDx relay module installed inside the circuit breaker can be used to remote the overload trip signal.
This module receives the signal from the Micrologic electronic trip unit through an optical link and
makes it available on the terminal block. The signal is cleared when the circuit breaker is closed. These
outputs can be reprogrammed to be assigned to other types of tripping or alarm.
The SDx module may be used in 400 Hz systems for voltages from 24 to 440 V.
The SD2 output, available on all Micrologic trip units, corresponds to the overload-trip indication.
The SD4 output, available on Micrologic 5/6, is assigned to:
• overload pre-alarm (Micrologic 5)
• ground-fault trip indication (Micrologic 6)
These two outputs automatically reset when the device is closed (turned ON).
For Micrologic 5/6, the SD2 and SD4 outputs can be reprogrammed to be assigned to other types of
tripping or alarm.
It is possible to assign a function output characteristics:
• latching with a time delay. Return to the initial state occurs at the end of the time delay
• permanent latching. Return to the initial state takes place through the communication function.
Static outputs: 24–415 Vac / Vdc; 80 mA max.
SDTAM Module
The SDTAM module, linked to the contactor controller, opens the contactor when an overload or other
motor fault occurs, thus avoiding opening of the circuit breaker. The SDTAM module is specifically for
the motor-protection Micrologic trip units 2 M (2.2 M and 2.3 M).
Micrologic 2 M
The SD4 output opens the contactor 400 ms before normal circuit-breaker opening in the following
cases:
• overload (long-time protection for the trip class)
• phase unbalance or phase loss
The SD2 output serves to memorize contactor opening by SDTAM.
Output characteristics
Output reset can be:
• manual by a pushbutton included in the wiring diagram
• automatic after an adjustable time delay (1 to 15 minutes) to take into account the motor-cooling
time
Static outputs: 24–415 Vac / Vdc; 80 mA max. a (+) 24–415 V.
SDx module with
terminal block.
SDTAM module
with terminal block.