Question 1

I'm considering using this as a battery isolator for a winch on my Jeep. Can it handle the current? and what are the physical dimensions?

Accepted Answer

Your winch maker will list amperage for various amounts of load.  Also switches will show three amperages they can tolerate for different amounts of time.  So this switch is rated for 350 amps "continuous" (ie on for hours or permanently) 600 amps "intermittent" (for five minutes according to specs), and 1,200 amps "cranking"/peak for 30 seconds. OK so my SmittyBilt 9500 XRC Generation 3 winch has the following draws:  80 amps pulling zero lbs (winding rope in),  160 amps pulling 2,000 lbs, 220 amps pulling 4,000 lbs,  280 amps pulling 6,000, 340 amps pulling 8,000 lbs, and 385 amps pulling maximum of 9,500 lbs. H20 smitty and Second Gen XRC smitty use about 10% more amps. Also you "should" have a safety margin of 20%, ie no more than 80%. Now that means switch is ok continious running my winch are 2/3 of max load,  and switch is fine running extreme max of winch load five minutes, five minutes rest, five minutes run, etc. BUT if you are anywhere over 50% of winch capacity/load  you are going to run winch five minutes and rest the winch for five minutes anyway. so if your numbers are like mine you are ok. Check your winch makers specs on their website. Look until you find all numbers for the range of loads since the basic single amperage number they will list will be about 60% of max.  I would say 90% of up to 12,000 lb winches are ok with this switch. But that presupposes you have at least read up on winching and know that you will damage your winch if you pull at max for more than four or five minutes. goodluck. PS blue sea's web page lists the contentious, intermittent five minutes and peak 20 seconds for all its switches. The other red "m" model is 300 continuous, this "E" is 350 continuous, and the gray one is 600, 900,1750

Question 2

where can I get wiring instructions with diagram?

Accepted Answer

You tube has a few I found helpful.

Question 3

Package says it’s compatible with up to 4/0 awg. my batter bank is 200a lithium tuning through 2/0 awg wire to my bus bar. will this switch work?

Accepted Answer

It is compatible with any wire that fits the terminals. AWG 4, 2, or 0. The important thing is the current and voltage. At 48 volts this switch should be good at 233 amps continuously.  Here is my complete review: Fabulous switch. I have mine on my golf car and switch between two 48 volt battery banks; It is specified at Continuous rating: 350A, Maximum voltage: 32V DC. Doing the math: Power = Current x Voltage. Thus, 350 x 32 = 11,200 Watts that this switch can handle. So, 11,200 / 48 = 233 Amps continuous ... at 48 volts this switch should be good at 233 amps continuously. see less

Question 4

What is alternator field disconnect vs the regular product without AFD? Looking to use on a camp trailer.

Accepted Answer

You do not need afd on a trailer, only on a vehicle with an alternator such as a motorhome or boat. It protects the alternator diodes upon disconnect.

ASIN	B000MMC914
Actuator Type	Rotary
Best Sellers Rank	#7,617 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #2 in Boat Battery Switches
Brand Name	Blue Sea Systems
Circuit Type	1-way
Color	Red
Compatible Devices	Boats
Compatible with Vehicle Type	Boat
Connectivity Protocol	X-10
Connector Type	Idc
Contact Material	Tinned Copper
Contact Type	Normally Open
Control Method	Touch
Control Type	ON/OFF
Controller Type	Boat
Current Rating	350 Amps
Customer Reviews	4.7 4.7 out of 5 stars (727)
Global Trade Identification Number	00632085900359
Included Components	e-Series On Off Battery Switch
International Protection Rating	IP66
Item Dimensions	2.9 x 6.38 x 8.63 inches
Item Type Name	BATTERY SWITCH ON/OFF
Item Weight	0.59 Kilograms
Lower Temperature Rating	1 Degrees Celsius
Manufacturer	Blue Sea Systems
Material Type	Plastic
Model	9003e
Mounting Type	Panel Mount, Surface Mount
Number of Items	1
Number of Positions	2
Operating Voltage	48 Volts (DC)
Operation Mode	ON-OFF
Part Number	9003e-BSS
Smart Home Compatibility	Not Smart Home Compatible
Switch Type	Rotary
Terminal	Spdt
UPC	632085900359
Unit Count	1.0 Count
Upper Temperature Rating	1 Degrees Fahrenheit
Warranty Description	Limited Lifetime Warranty
Wattage	16800 watts

Blue Sea Systems e-Series Battery Switch Single Circuit, On/ Off, 48V DC, 350 A, Red, 9003e

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