New England Solar Electric, Inc.

Array Disconnect

753-001	20 to 60A, 12 or 24V	$59
	Extra Breakers	$14 ea.

You will need to have a fused-disconnect (DC circuit breaker) between the module array and the charge controller and between the charge controller and the battery bank. We now offer both disconnects in one small box. We label the box for you, and best of all, you can even add two DC load circuit breakers if needed. The breakers are available in 15, 20, 30, 40, 50 or 63 amps. The array breaker must be at least 33% greater than the amperage output of your array and at least 50% greater if you will have winter snow reflection in your climate. The controller circuit breaker (battery disconnect) should be sized for the size charge controller you have. Because the included breakers were specifically designed for DC use, no extra fuses are required.

Module Interconnects

Module interconnects are used to daisy chain modules together to form a sub-array. Or they are used to series connect two 12V modules together to charge a 24V battery bank.The interconnects are made from 12 ga. USE wire with spade lugs to connect to the module wiring terminals.

310-002	Short Module Interconnect	$3 ea
	Specify Module Type

MC Module Interconnects

MC Module interconnects have male and female MC connectors crimped onto 12 ga USE color coded wires. We can supply both MC3 and MC4 type connectors. Sold in pairs.

310-001	Any length up to 20'	$39 pair
	Longer that 20' add	$1.40 ft

AC and DC Lightning Arrestors

331-302 LA302R AC Arrestor 120/240V   $39
For 120/240V Generators
331-303 LA303R AC Arrestor 120/240V   $45
For 3-Wire Submersible Pumps
331-301 LA302DC DC Lightning Arrestor   $49

An LA302R should be used between your generator and Xantrex inverter/charger when the generator is located outside and permanently wired with either an underground line or an overhead line. It could also be used on a two wire submersible pump. The LA303R mounts in a three wire submersible pump control box. A must to protect the inverter. The LA302DC is made specifically for DC current surges. Use one to protect your array, charge controller or other DC device. Clamping time is 5 to 25 nanoseconds. The LA302DC is a silicon oxide varistor type device rated to handle 60,000 amps.

DC Lightning Protectors

330-001 12V or 24V DC $16

Every PV system needs a lightning protector between the module array and the charge controller. This is most conveniently installed in the array disconnect circuit breaker box. This unit is designed to work with 12 or 24 volt systems.

Array Junction Boxes

These are weather-proof plastic UL listed wiring boxes complete with cover and gasket. They are used to make connections between the array wiring and the array down-lead wires. You locate and drill the holes (using an inexpensive 13/16" spade bit) for the weather-tight connectors. Connection can be made using the terminal blocks or split bolt connectors listed below. The boxes can also serve as weather heads on electrical conduit.

355-006	6" x 6" x 4"	$24.00
355-008	8" x 8" x 4"	$46.00

PV Combiner Boxes
745-010	Outback FWPV-8 15.2" x 9.2" x 3.9"	$139.00
757-103	MidNite MNPV-3 11" x 5" x 4"	$89.00
757-106	MidNite MNPV-6 14" x 9" x 4"	$109.00
343-0xx	OBPV Circuit Breakers 6, 10, 15 & 20 Amps 10,000A interrupt current	$14.00 ea
354-010	OBFH Fuse Holder 600 VDC	$6.25 ea
344-0xx	OBPV Fuses 6, 10, 12, 15 Amps	$6.25 ea

A PV combiner box provides a convenient way to meet the NEC requirements for series fusing of PV modules.

MidNite Solar makes a 3 position and a 6 position PV combiner box. They are each housed in a gray aluminum rainproof enclosure and accept three or six 150VDC breakers respectively. The MNPV6 will also accept four 600VDC touch safe fuse holders for grid-tie arrays. Each has both a negative bus and ground bus which accept up to 1/0 AWG wire size. The positive bus also accepts 1/0 AWG wire. Maximum total output current is 120 amps.

The FWPV-8 accommodates up to eight source circuit breakers rated up to 60 amps per circuit or six source fuse holders up to 15 amps per circuit. The maximum current rating of the FWPV-8 is 120A. It can be used with 12, 24 and 48 VDC stand alone PV systems and up to 600 VDC grid tie systems, using the fuse holders. The FWPV-8 can handle a maximum 150 VDC input on the circuit breakers or 600 VDC input when using the fuse and fuse holders (for grid-tie applications).

The FWPV-8 is enclosed in a powered-coated steel NEMA 3R enclosure for either indoor or outdoor use. Its eight input terminal pairs can accept up to #2 AWG wire and its two output terminal pairs, up to #2/0 AWG wire.

Weathertight Connectors

Weathertight connectors are used to maintain a weather - or water - tight seal around module interconnect wires as they exit a module or array junction box. They also act as a strain relief. Two types are used when wiring arrays: a plastic connector for #12 USE module interconnects and a metal connector with a rubber insert for #10 UF array down-lead cable (if used).

Weathertight Connector for Modules

Weathertight Connector for #10 UF cable

These are used to connect two copper wires together in a junction box. They must be covered with several layers of electrical tape afterwards to insulate them.

These wire end connectors can be used when crimped or soldered connectors are not available. They are especially useful for making your own heavy duty battery or inverter cables.

This is a four position terminal block rated for 50 amps. It will accept up to 6 AWG wire. It can be used to facilitate wiring between your array and charge controller. L 2-3/8" D 1-1/4" H 1-1/8"

This is a six position terminal block rated for 63 amps. It will accept up to 6 AWG wire. It can be used to facilitate wiring between your array and charge controller.
L 3-3/8” D 1-1/16” H 1-1/16”

New England Solar Electric, Inc.

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Disconnects and Array Wiring Devices

Array Wiring Devices