Samlex America DC-FA-300 User Manual

2 YEAR LIMITED WARRANTY

The DC-FA-100, DC-FA-200 and DC-FA-300 fuse assemblies manufactured by Samlex Amer­ica, Inc. (the “Warrantor“) is 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 Authoriza­tion 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 mate­rial 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 prot, 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

e-mail: [e-mail]
website: www.samlexsolar.com

Fuse
Assembly

Owner's
Manual

Please read this
manual before
installing your
fuse assembly

DC-FA-100
DC-FA-200
DC-FA-300

INTRODUCTION

Fuse Protection in the Battery Circuit

A battery is an unlimited source of current. If there is a short circuit along the length of the cables that
connect the battery to the inverter, thousands of Amperes of current can ow from the battery causing
shorting: a section of the cable can overheat, the insulation can melt and the cable can ultimately break. This
interruption of high current can generate hazardous, high temperature, high energy arc accompanied by
a high pressure wave that may cause re, damage to nearby objects or injury. To prevent the occurrence of
such hazards under short circuit conditions, an appropriate fuse should be used in the battery circuit with the
required current interrupting capacity (Termed AIC – Ampere Interrupting Capacity). For this purpose, fuses
with an AIC rating of 10000 A at 14 V / 5000 A at 32 V, or higher should be used.

CONsTRUCTION

The DC-FA-100, DC-FA-200 and DC-FA-300 Fuse Assemblies contain 100A, 200A and 300A fuses respectively
(Fig. 1).These fuses are Marine Rated Battery Fuses (MRBF-XXX Series) and are also sold separately for
replacement. Samlex Models: MRBF-100, MRBF-200, MRBF-300.

Electrical Specications

• Voltage rating of max 58 VDC

• Current ratings are 100 A (MRBF-100), 200 A (MRBF-200) and 300 A (MRBF-300)

• AIC of 10000 A at 14VDC, 5000 A at 32 VDC and 2000 A at 58 VDC

• Ignition protected as per SAE J1171

• Weather Proof (IP66)

The MRBF Fuse provides easy, weatherproof and economical circuit protection in tight space constraints. The
fuse is installed between the Positive Battery Terminal Stud and the Positive Battery Cable with the help of a
special Clamping Fixture.

The Clamping Fixture consists of the following:

• Clamping Fixture Bar (CFBAR), Fig. 2. Has a base plate for connecting to the battery stud (with a hole
to accommodate battery stud of up to stud size 3/8” / M10) and a stud (size M-8) for connecting the
fuse MRBF and the battery cable.

• Stainless Steel nut (thread size M8, will require ½” or 13 mm wrench for tightening), Flat Washer and
Spring Washer, Fig. 3.

• An Insulating Cap, Fig. 4. It slides over the base plate of CFBAR and is used to insulate the exposed
stud and the nut of the CFBAR.

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11013-DC-FA-100-200-300-1112

MAN-10008

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D. Slide the Insulating Cap onto the rectangular strip of the CFBAR and then insert the hood portion onto the
exposed portion of the stud of the CFBAR. See Figures 8 and 9.

Fig. 1. Marine Rated Battery Fuse (MRBF) Fig. 2. Clamping Fixture Bar (CFBAR) or
Single Pole Fuse Bar

Fig. 3. M-8 Nut, Flat Washer and Spring Washer Fig. 4. Insulating cap

INsTALLATION

A. Insert the fuse MRBF onto stud provided on the CFBAR. See Fig.5.

Fig. 5. Fuse MRBF inserted into the stud on CFBAR

B. Insert the cable lug (crimped to one end of the Positive battery cable) onto the CFBAR stud so that it sits
over the fuse MRBF. See Fig. 6.

Fig. 8. Insulating Cap slid over the rectangular portion of CFBAR Fig. 9. CFBAR with tted fuse MRBF

E. Bolt the CFBAR to the Positive terminal stud of the Battery usually denoted by the ‘+’ sign as shown in Fig. 10.

Fig. 10. Installed arrangement

F. Please ensure that all the connections are tight.

Fig. 6. Fuse MRBF and cable lug inserted into the stud of the CFBAR

C. Insert the at washer, the spring washer and the M-8 nut on to the CFBAR stud and tighten the nut with a
½” wrench. See Fig. 7.

Fig. 7. Fuse MRBF and Positive cable xed to the CFBAR

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