Owner's
Manual
Please read this
manual before
installing your
connectors
Solar Panel
Branch
Connectors
SBC-2
1
4
GENERAL INFORMATION ON AN MC4 CONNECTOR SYSTEM
MC4 Connector Systems used to connect Samlex Solar Panels consist of male and female MC4 connectors and
branch connectors. This type of connector system is easy to install and uses “snap-in” safety locking tabs to
lock two mating connectors, thereby avoiding unintentional disconnection. Also, the mating contacts are
sealed against an ingress of dust and water. Specications are as follows:
• Contact diameter Ø 4 mm
• Maximum rated current - 30 A
• Maximum system voltage - 1000 V
• Degree of ingress protection when connected and properly locked - IP67
• Temperature range 40°C to +90°C
• TÜV Rheinland – type approved
MC4 Connectors (Fig. 1)
The MC4 Connectors and branch connectors mentioned in this manual have been designated “Male” and
“Female” based on the characteristics of the mating contact inserts inside the terminals.
In the MC4 Male Connector (1 of Fig. 1), the internal mating contact insert (2, Fig. 1) is a male pin. It has
two slots (3 of Fig. 1) for insertion of the two “snap-in” type of locking tabs (6 of Fig. 1) of the MC4 Female
Connector (4 of Fig. 1) for rm mating connection. This connector is marked "-".
In MC4 Female Connector (4, of Fig. 1), the internal mating contact insert (5 of Fig. 1) is a female cylindrical
socket. It has two “snap-in” type of locking tabs (6 of Fig. 1) that are inserted into the two slots (3 of Fig. 1) in
the MC4 Male Connector (1 of Fig. 1) for rm mating connection.
Wire is crimped to the contact inserts (2 and 5 of Fig. 1) using a special purpose crimping tool designed for
MC4 connectors. After the wire has been crimped, the contact insert is required to be seated securely inside
the housing and the strain relief / seal (7 of Fig. 1) is to be tightened fully to provide a water-tight seal.
1. MC4 Male connector (marked “-”)
2. Male contact insert
3. Slots for accepting “snap-in” type of locking tabs of the mating MC4 female connector
4. MC4 Female connector (marked “-”)
5. Female contact insert
6. “Snap-in” type of locking tabs of the mating with the slots on the MC4 female connector
7. Strain relief and seal
1
2
6
4
5
3
7
7
6
3
Fig. 1 . MC4 Male and Female Connectors
Note: Pairs of male/female MC4 connectors are sold separately. Samlex Model: MC4-2
11013-SBC-2-1121
MAN-10010
2 YEAR LIMITED WARRANTY
The SBC-2 Solar Panel Branch Connectors manufactured by Samlex America Inc.
(the “Warrantor“) are warranted to be free from defects in workmanship and materials
under normal use and service. The warranty period is 2 years for the United States and
Canada, and is in effect from the date of purchase by the user (the “Purchaser“).
Warranty outside of the United States and Canada is limited to 6 months. For a warranty
claim, the Purchaser should contact the place of purchase to obtain a Return Authoriza-
tion Number.
The defective part or unit should be returned at the Purchaser’s expense to the authorized
location. A written statement describing the nature of the defect, the date of purchase,
the place of purchase, and the Purchaser’s name, address and telephone number should
also be included.
If upon the Warrantor’s examination, the defect proves to be the result of defective mate-
rial or workmanship, the equipment will be repaired or replaced at the Warrantor’s option
without charge, and returned to the Purchaser at the Warrantor’s expense. (Contiguous
US and Canada only)
No refund of the purchase price will be granted to the Purchaser, unless the Warrantor is
unable to remedy the defect after having a reasonable number of opportunities to do so.
Warranty service shall be performed only by the Warrantor. Any attempt to remedy the
defect by anyone other than the Warrantor shall render this warranty void. There shall
be no warranty for defects or damages caused by faulty installation or hook-up, abuse or
misuse of the equipment including exposure to excessive heat, salt or fresh water spray, or
water immersion.
No other express warranty is hereby given and there are no warranties which extend
beyond those described herein. This warranty is expressly in lieu of any other expressed
or implied warranties, including any implied warranty of merchantability, tness for the
ordinary purposes for which such goods are used, or tness for a particular purpose, or
any other obligations on the part of the Warrantor or its employees and representatives.
There shall be no responsibility or liability whatsoever on the part of the Warrantor or
its employees and representatives for injury to any persons, or damage to person or
persons, or damage to property, or loss of income or prot, or any other consequential or
resulting damage which may be claimed to have been incurred through the use or sale of
the equipment, including any possible failure of malfunction of the equipment, or part
thereof. The Warrantor assumes no liability for incidental or consequential damages of
any kind.
Samlex America Inc. (the “Warrantor”)
www.samlexamerica.com
103 - 4268 Lozells Ave.
Burnaby, BC
Canada V5A 0C6
T: 604 525 3836
F: 604 525 5221
TF: 1 800 561 5885
www.samlexamerica.com/solar
