Details

Connectivity solutions for photovoltaic power systems
LC4®-JC – Junction boxes for Crystalline modules
LC4-JC
Photovoltaic junction box for crystalline modules1, with
connecting cables and LC4® connectors, with 2–4 spring
clamps and 0–3 diodes, for ribbons fed through the back
plane of the module, mounting with self-adhesive pad2 or
by means of glue
1. Temperature range
-40 °C/+85 °C (IEC)
-40 °C/+90 °C (UL)
(+125 °C upper limit temperature)
2. Materials
halogen-free, UV-resistant
Housing/cover
Contact
Pressure contact spring
Cap nut
Sealings
Pressure compensation seal
Adhesive pad
m-PPE, 5VA according to UL 94
CuNiSi, tin-plated
CrNi
m-PC, V0 according to UL 94
silicone
PTFE
upon request
3. Mechanical data
Mating with
photovoltaic connectors LC4
Further data
see LC4-CP 3.../LC4-AM
Protection degree (junction box)3 IP 65
Connectable contact ribbons
Width
≤ 10.0 mm
≤ 0.1 mm
Thickness
Other dimensions upon request
Connected conductor
Photovoltaic cable, double-insulated, technical Data upon request
Section alternatively
2.5 mm2 (AWG 14), UL-approved
4.0 mm2 (AWG 12), TÜV/UL-approved
6.0 mm2 (AWG 10), TÜV/UL-approved
4. Electrical data (at Tamb 20 °C)
≤ 1 mΩ
various diodes available, value depending on type of diode and diode
bypass test, details upon request
Rated current (UL)
15 A DC (AWG 14)
20 A DC (AWG 12, AWG 10)
without diode, details upon request
Rated voltage4
1000 V DC (IEC)/600 V DC (UL)
Reverse current
25 A DC
Modul working voltage
100 V DC
Overvoltage category4
III (8 kV)
4
Material group
IIIa (IEC)/2 (UL) (CTI ≥ 250)
Creepage distance/clearance between
all other live parts
12.7 mm/9.5 mm
live parts and touchable surfaces 20.0 mm
4
Pollution degree
3
Protective class
II
Application class5
A
Insulation resistance
> 10 GΩ
Contact resistance
Rated current (IEC)
1
2
3
4
5
according to application class A of IEC 61730-1/UL 1703
appropriate materials upon request
according to IEC 60529/DIN EN 60529
according to DIN EN 60664/IEC 60664 resp. according to ANSI/UL 746A
according to IEC 61730-1
®
*a
*b
*c
*d
*e
*f
*g
self-adhesive pad option
spacer option for fixation by means of glue
assembly hole for contact ribbons, view without cover
connecting cables: section 4.0 mm² (AWG 12) or 6.0 mm² (AWG 10)
connecting cables: section 4.0 mm² (AWG 12) or 6.0 mm² (AWG 10)
left connector: LC4-CP 3... or LC4-AM
right connector: LC4-CP 3... or LC4-AM
Crystalline modules:
Wiring diagram
Two-pole junction boxes,
for ribbons fed through the
back plane of the module
Designation
LC4-JC
www.lumberg.com
details upon request
03/2014