CU250JD SQUARE D, CU250JD Datasheet - Page 38
![MECHANICAL LUG](/photos/21/79/217912/4674300_sml.jpg)
CU250JD
Manufacturer Part Number
CU250JD
Description
MECHANICAL LUG
Manufacturer
SQUARE D
Series
PowerPactr
Datasheet
1.AL150HD.pdf
(84 pages)
Specifications of CU250JD
Features
200 - 250 A, 1/0 AWG?300 Kcmil
Accessory Type
Mechanical Lug
For Use With
J-Frame Thermal Magnetic Circuit Breakers
38
PowerPact
Section 3—Accessories
J-Frame Circuit Breaker
with ELM Installed
06/2010
®
H- and J-Frame Circuit Breakers
Earth Leakage Module (ELM) for PowerPact H- and J-Frame MCCBs
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 Amps to 200 Amps 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:
•
•
•
•
•
•
•
•
•
Table 49:
1
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
•
•
•
•
•
See Section 6, Figure 54 for ELM Trip Curves.
Companion Circuit Breaker
Prefix
HD, HG, HJ, HL
JD, JG, JJ, JL
At 250 A, the ELM250JD can be used with 80% rated circuit breakers only.
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
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
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 (4-frame)
ELM Selection Chart
Size
15–150 A
150–250 A
Enclosure Space
Required I-Line
Switchboard
LA
LA
®
1
mounting and are easily convertible to unit-mount by removing
Catalog No.
ELM150HD
ELM250JD
Pick-Up
Adjustments
30 mA
100 mA
300 mA
1A
3A
© 2004–2010 Schneider Electric
Ground-Fault
Time Delay
Adjustments
Instantaneous
60 ms
100 ms
500 msec
All Rights Reserved