Brochure

PowerPact H-, J-, and L-Frame Circuit Breakers
Accessories and Auxiliaries
126
02/2016 © 2011–2016 Schneider Electric
All Rights Reserved
Earth Leakage Module (ELM) (H- and J-Frame Only)
The Earth Leakage Module (ELM) is an add-on module which, when connected to a PowerPact H- or
J-frame MCCB, provides low-level ground-fault sensing and ground-fault relay functions.
Because these ELMs are highly sensitive (30 mA to 3 A), they provide much greater protection than
GFMs (20 to 200 amperes sensitivity). The ELMs provide greater protection of control circuits and
other sensitive equipment. The associated circuit breaker must have a 48 Vdc shunt trip), which may
be field-installed (kit S29392) or factory-installed (suffix –SP) in the H- or J-frame circuit breaker.
The add-on Earth Leakage Module (ELM) features:
• Adjustable ground-fault pickup levels as low as 30 mA
• Adjustable ground-fault time delays from instantaneous to 500 msec
(time delay can be applied to any setting)
• Integral ground fault push-to-test feature
• Ground-fault indicator; pop-up button for local status and contacts for remote indication (to be used
only with the tripping option)
• All ELMs are supplied for I-Line mounting and are easily convertible to unit-mount by removing the
I-Line mounting feet
• Three poles; 240 to 600 Vac maximum: 3-phase, 3-wire (no neutral) and 1-phase, 2-wire
applications
• Line-power obtained through internal bus to provide power for electronics, shunt trip, and integral
test feature
• A shunt trip is required in the circuit breaker; it may be field-installed or factory-installed in the
PowerPact H and J circuit breakers.
• UL 1053—Ground-fault Sensing and Relaying Equipment
Factory-Installed ELMs
The catalog number for circuit breakers with factory-installed ELM should include the special suffixes
SP and VL or VM:
H D M 3 6 150 SP VL
where
• H = H-fame (or J = J-frame)
• D = D interruption level (or G, J or L)
• M = Lugs on ON end and terminal nuts on OFF end (required)
• SP = Factory-installed 48 Vdc shunt trip (S29392, required)
• VL= Earth Leakage Module (ELM) <150 A (H-frame) or
VM = Earth Leakage Module (ELM) <250 A (J-frame)
J-Frame Circuit Breaker
with ELM Installed
Table 100: ELM Selection Chart
1
1
At 250 A, the ELM250JD can be used with standard (80%) rated circuit breakers only.
Companion Circuit Breaker Enclosure Space
Required I-Line
Equipment
Catalog No.
Pick-Up
Adjustments
Ground-Fault
Time Delay
Adjustments
Prefix Size
HD, HG, HJ, HL 15–150 A LA ELM150HD
30 mA
100 mA
300 mA
1A
3A
Instantaneous
60 ms
100 ms
500 msec
JD, JG, JJ, JL 150–250 A LA ELM250JD