MicroLogic™ Add-On Ground-Fault Module (GFM)
Class 931, 940, 960
GFM Ground Fault Module
|
GFM250 |
The MicroLogic ground-fault module (GFM) is a UL Listed circuit breaker accessory for equipment protection. It is a combination ground-fault relay and ground-fault sensing device.
MicroLogic Add-On Ground-Fault Module features:
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Used in combination with the FA, KA, FC, KC, FI, and KI type circuit breakers with a ground-fault shunt trip factory installed (add the suffix “G” to the circuit breaker)
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Adjustable ground-fault pickup levels
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Adjustable ground-fault time delays
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Integral ground fault push-to-test feature and ground-fault indicator
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All GFMs supplied for I-Line™ mounting, easily convertible to unit mount by removing the I-Line brackets
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Neutral current transformer is supplied for 3-phase 4-wire applications. Refer to instructions for proper installation
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Zone-selective interlocking capability is standard with upstream MicroLogic trip system circuit breakers. The GFM can also be zone interlocked with the GC ground-fault system by using a restraint interface module. See RIM32 Restraint Interface Module.
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120 Vac control power is required for integral test feature. Meets NEC 230-95(c)
note
Module/Enclosure Selection Chart
|
Companion |
Cat. No. |
Enclosure Space Required |
Ground-Fault |
Availability |
|
|---|---|---|---|---|---|
|
I-Line |
Individual Enclosure [1] |
||||
|
FAL, FHL, FCL, FA, FH, FC |
LA |
KA |
20–100 A |
— |
|
|
FI |
LA |
— |
20–100 A |
Not Available |
|
|
KAL, KHL, KI, KA, KH, KC |
LA |
LA |
40–200 A |
— |
|
RIM32 Restraint Interface Module
|
RIM32 |
The RIM32 Restraint Interface Module is used to interface the restraint signals between various Square D MicroLogic™ circuit breakers, MicroLogic ground-fault modules, and GC-100 ground-fault protection systems.
The restraint interface module operates on either 120 or 240 Vac, 50/60 Hz. The module is protected by a 1/4 A fuse.
Allowable ZSI combinations are shown in the table below. (Series numbers for current design circuit breakers end in B, for example NE Series 3B.) For double-ended or larger systems, or systems which contain devices from different columns in the table below, contact your local Sales Office for combination information.
If more inputs or outputs are needed, another restraint interface module is necessary. Contact your local Sales Office for information on multiple module installations.
note
The maximum distance between devices is 1000 ft. (305 m).
RIM32
|
Cat. No. |
|---|
ZSI Combination (Where All Inputs Driven are Same Columns)
Circuit Breaker Series Outputs |
Circuit Breaker Series Inputs |
|||||||
|---|---|---|---|---|---|---|---|---|
|
SE 2 (Ground Fault) |
SE 2 (Short Time) |
ME 3, NE 1, PE 4 |
ME 4 & 5, NE 2 & 3, |
ME 5A, NE 3A, |
LE 1B, ME 5B, NE 3B, |
GC100 |
Rim32 |
|
|
SE 2 (Ground Fault) |
50 |
— |
R |
R |
R |
R |
R |
50 |
|
SE 2 (Short Time) |
— |
1 |
R |
R |
R |
R |
R |
50 |
|
ME 3, NE 1, PE 4 |
50 |
R |
15 |
2 |
13 |
47 |
R |
50 |
|
ME 4, 5 & 5A, NE 2, 3 & 3A, PE 5, 6 & 6A, SE 3 & 3A |
50 |
R |
R |
1 |
1 |
7 |
R |
14 |
|
LE 1B, ME 5B, NE 3B, PE 6B, SE 3B |
50 |
R |
10 |
1 |
R |
26 |
R |
44 |
|
GC100 |
R |
R |
R |
R |
R |
R |
7 |
50 |
|
GFM [2] |
50 |
— |
2 |
1 |
1 |
5 |
R |
1 |
|
RIM32 |
50 |
6 |
50 |
7 |
37 |
50 |
15 |
50 |
|
# = Maximum inputs without RIM32. Self-restraint counts as one input. |
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