Combiners & Disconnects

midnite

web solarStore

 

 

  • Blue Pacific Solar Products, Inc. BBB Business Review

 

Square-D Disconnects

240 VAC and 600 VDC NEMA 3R Safety Switch Disconnects

ironridgeFor inverters that do not include a DC disconnect, or when an additional DC disconnect is required, one of these 600 VDC disconnects can be used. Many utilities require an AC disconnect between a grid-tie inverter and the AC load center, close to the AC service entrance, and with a visible and lockable handle.

For inverters that do not include a DC disconnect, or when an additional DC disconnect is required, one of these 600 VDC disconnects can be used. Many utilities require an AC disconnect between a grid-tie inverter and the AC load center, close to the AC service entrance, and with a visible and lockable handle.

The Square-D 600 VDC-rated 30 A, 60 A, and 100 A three-pole safety switches are rated by Square-D to handle one 600 VDC circuit per pole for PV (although they are not UL Listed for this purpose). The 30 A switch is rated for 16 A short-circuit current (Isc at PV module STC) for non-fused versions, and 12.8 A (Isc) for fused versions. The 60 A switch is rated for 48 A (Isc) for non-fused versions and 38 A (Isc) for fused versions. The 100 A switch is rated for 80 A (Isc) for non-fused versions and 64 A (Isc) for fused versions.

All of the Square-D 600 VDC non-fused disconnects are rated for disconnecting one circuit at full rated current using two poles in series. Fused disconnects are rated for 80% of switch current rating at up to 600 VDC.

Use Class-R fuses of the proper voltage and amperage for fused disconnects. 600 V fuses will not fit into 240 VDC disconnects, and 250 VAC/125 VDC fuses will not fit into 600 V disconnects, and vice-versa.

Heavy-Duty (HD) switches are rated for “Service duty”. Use the fused versions for AC line-side connections.

AC-Only NEMA 3R Safety Switch Disconnects
Use these General-Duty Square-D AC safety switches for single-phase or three-phase grid-tie inverter outputs if you are back-feeding a circuit breaker to make the connection to the service panel. They can also be used as a disconnect for the AC output of off-grid inverters. Use Class-R 250 VAC/125 VDC fuses with the fused versions of these disconnects.
Amps AC/DC Fused Poles Neutral kit Ground kit Dimensions (H" x W" x D") Weight Model Item code
30 A AC only No 2 SN20A PK3GTA1 9.63 x 7.25 x 3.75 4.4 lbs DU221RB 5800025
30 A AC only Yes 2 included PK3GTA1 9.63 x 7.25 x 3.75 4.5 lbs D221NRB 5800018
30 A AC only No 3 SN20A PK3GTA1 9.63 x 7.25 x 3.75 4.7 lbs DU321RB 5800027
30 A AC only Yes 3 included PK3GTA1 9.63 x 7.25 x 3.75 5.1 lbs D321NRB 5800062
60 A AC only Yes 2 included GTK03 14.88 x 6.63 x 4.88 9.7 lbs D222NRB 5800019
60 A AC only No 3 SN20A PK3GTA1 9.63 x 7.25 x 3.75 5 lbs DU322RB 5800059
60 A AC only Yes 3 included GTK03 14.88 x 6.63 x 4.88 9.8 lbs D322NRB 580-0021
100 A AC only Yes 2 included GTK0610 17.50 x 8.50 x 6.50 16 lbs D223NRB 580-0020
100 A AC only No 3 SN0610 GTK0610 17.50 x 8.50 x 6.50 15 lbs DU323RB 580-0028
100 A AC only Yes 3 included GTK0610 17.50 x 8.50 x 6.50 16 lbs D323NRB XXXXXXXXXX
200 A AC only Yes 2 included PKOGTA2 29.25 x 17.25 x 8.25 29 lbs D224NRB XXXXXXXXXX
200 A AC only Yes 3 included PKOGTA2 29.25 x 17.25 x 8.25 30 lbs D324NRB 580-0022
AC / DC Square-D Disconnects
Amps AC/DC Fused Poles Neutral kit Ground kit Dimensions (H" x W" x D") Weight Model Item code
30 A Yes No 3 SN03 GTK03 14.88 x 6.63 x 4.88 9.3 lbs HU361RB 053-02312
30 A Yes Yes 3 SN03 GTK03 14.88 x 6.63 x 4.88 9.8 lbs H361RB 053-02313
60 A Yes No 3 SN0610 GTK0610 17.50 x 9 x 6.38 16 lbs HU362RB 053-02339
60 A Yes Yes 3 SN0610 GTK0610 17.50 x 9 x 6.38 16 lbs H362RB 053-02341
100 A Yes No 3 SN0610 GTK0610 21.25 x 8.50 x 6.38 24 lbs HU363RB 053-02357
100 A Yes Yes 3 SN0610 GTK0610 21.25 x 8.50 x 6.38 24 lbs H363RB 053-02355
200 A Yes No 3* SN20A PKOGTA2 29.25 x 17.25 x 8.50 44 lbs HU364RB 053-02364
200 A Yes Yes 3* SN20A PKOGTA2 29.25 x 17.25 x 8.50 -- H364NRB 053-02366
400 A Yes Yes 3* Included PKOGTA2 50.31 x 27.88 x 10.13 -- H365NR 053-02407
800 A Yes Yes 3* Included PKOGTA7 69.13 x 36.62 x 17.75 -- H367NR 053-02373
1,200 A Yes Yes 3* Included PKOGTA8 69.13 x 36.62 x 17.75 -- H368NR 053-02409

breaker*Uses 2 poles (and 2 fuses) in series for 600 VDC, no PV rating per pole.

AC-Only NEMA 3R Safety Switch Disconnects
Use these General-Duty Square-D AC safety switches for single-phase or three-phase grid-tie inverter outputs if you are back-feeding a circuit breaker to make the connection to the service panel. They can also be used as a disconnect for the AC output of off-grid inverters. Use Class-R 250 VAC/125 VDC fuses with the fused versions of these disconnects.
Part Number   Product   Price Add to Cart
5800025 xrs Square D, AC Disconnect, NEMA 3R, 30A, 240VAC, 2-Pole Unfused, Hub, 59123, DU221RB solar mounts
Qty
5800018 xrs Square D, AC Disconnect, NEMA 3R, 30A, 240V, 2-Pole Fused, Neutral Bar, 49590, D221NRB solar mounts
Qty
5800027 xrs Square D, AC Disconnect, NEMA 3R, 30A, 240VAC, 3-Pole Unfused, 59725, DU321RB solar mounts
Qty
5800062 xrs Square D, AC Disconnect, NEMA 3R, 30A, 240V, 3-Pole Fused, Neutral Bar, 50441, D321NRB solar mounts
Qty
5800019 xrs Square D, AC Disconnect, NEMA 3R, 60A, 240V, 2-Pole Fused, Neutral Bar, Hub, 49705, D222NRB solar mounts
Qty
5800059 xrs Square D, AC Disconnect, NEMA 3R, 60A, 240VAC, 3-Pole Unfused, 59909, DU322RB solar mounts
Qty
5800026 xrs Square D, AC Disconnect, NEMA 3R, 60A, 240VAC, 2-Pole Unfused, Hub, 59557, DU222RB solar mounts
Qty
XXXXXXXXXX xrs XXXXXXXXXXXXXXXXXXXXXXXXXXXXXX XXXXXXXXXXXXXXXXXXXXXXXXX solar mounts
Qty
XXXXXXXXXX xrs XXXXXXXXXXXXXXXXXXXXXXXXXXXXXX XXXXXXXXXXXXXXXXXXXXXXXXX solar mounts
Qty
XXXXXXXXXX xrs XXXXXXXXXXXXXXXXXXXXXXXXXXXXXX XXXXXXXXXXXXXXXXXXXXXXXXX solar mounts
Qty
XXXXXXXXXX xrs XXXXXXXXXXXXXXXXXXXXXXXXXXXXXX XXXXXXXXXXXXXXXXXXXXXXXXX solar mounts
Qty
XXXXXXXXXX xrs XXXXXXXXXXXXXXXXXXXXXXXXXXXXXX XXXXXXXXXXXXXXXXXXXXXXXXX solar mounts
Qty
XXXXXXXXXX xrs XXXXXXXXXXXXXXXXXXXXXXXXXXXXXX XXXXXXXXXXXXXXXXXXXXXXXXX solar mounts
Qty
XXXXXXXXXX xrs XXXXXXXXXXXXXXXXXXXXXXXXXXXXXX XXXXXXXXXXXXXXXXXXXXXXXXX solar mounts
Qty
XXXXXXXXXX xrs XXXXXXXXXXXXXXXXXXXXXXXXXXXXXX XXXXXXXXXXXXXXXXXXXXXXXXX solar mounts
Qty
XXXXXXXXXX xrs XXXXXXXXXXXXXXXXXXXXXXXXXXXXXX XXXXXXXXXXXXXXXXXXXXXXXXX solar mounts
Qty

outbackMidNite and OutBack Combiners Ship in 3 - 5 Business Days After Funds Clear.

240 V and 600 V NEMA 3R Safety Switch Disconnects
For inverters that do not include a DC disconnect, or when an additional DC disconnect is required, one of these 600 VDC disconnects can be used. Many utilities require an AC disconnect between a grid-tie inverter and the AC load center, close to the AC service entrance, and with a visible and lockable handle.
Part Number   Product   Price Add to Cart
5800037 xrs Square D, Disconnect, NEMA 3R, 30A, 600VAC/600VDC, 3-Pole Unfused, Hub, 63833, HU361RB solar mounts
Qty
02803061 xrs 1 - VISION, V2S-2S, DIGITAL KWH METER, FORM 2S, 240V, 200A; 1 - ITRON, DIGITAL KWH METER, CENTRON TYPE C1S, FORM 2S, 240 V, CL200, REMFG solar mounts
Qty

outbackMidNite and OutBack Combiners Ship in 3 - 5 Business Days After Funds Clear.

solar combiners disconnects electrical distribution parts

Solar Combiners and electrical distribution integrating. For grid tied as well as off-grid solar kits, after you have selected the equipment needed, you will need to complete the solar package with combiners, disconnect and over current protection according to the National Electric Code (NEC) requirements. Building inspectors tend to look very close at how the solar array is wired and if NEC approved electrical equipment is used. When planning your grid tied or off-grid solar system knowing where to place the electrical equipment is critical for code compliant solar installations.

The National Electrical Code requires that all solar electrical equipment be installed and used in accordance with the manufactures instructions. A common mistake for combiners, disconnects and inverters is not to allow for the proper spacing according to the equipment manufactures specifications. You should also avoid placing any electrical equipment in direct sunlight. The main reason for that is electricity flowing through circuits tend to heat up the equipment anyway. By placing the equipment in the shade whenever possible, you can avoid having to derate the power loss according to the manufactures instructions. For conduit runs you may not be able to avoid locations out of the direct sunlight. Not just in these cases, but in all cases it is better to use wires and conduit that may be overrated than underrated for the application.

Any combiner box, disconnect or other electrical equipment you install with wire terminations inside of it can be called an enclosure. It is important you know the National Electrical Manufactures Association (NEMA) rating before you buy and install the equipment. The NEMA indoor or outdoor rating will determine how the equipment may be used and will certainly affect your inspection and the performance of the grid-tied or off-grid solar system.

The most common NEMA enclosure ratings for combiners, disconnects, cabinets and inverters are:

  • NEMA 1 - Indoor Applications Only; This type of enclosure does not offer any protection from the elements and should not be exposed to dust or water.
  • NEMA 3R - Outdoor Installation; This type of enclosure offers protection from rain but generally must be installed on a vertical surface only.
  • NEMA 4 - Outdoor Installations on Horizontal or Vertical Surfaces - NEMA 4 enclosures are very durable, weatherproof and can withstand direct spray from a hose.

When selecting the location of your combiners and or disconnect equipment, you will need to install them in such a location that when you work on the inverter you can safely disconnect both the AC and DC power sources. The National Electric Code requires the solar disconnect be installed in a readily accessible location either on the outside of the building normally near the main breaker box so the fire officials can quickly locate it. The NEC code section 690.15 states that the solar array must have a means for disconnecting and isolating the inverter from he main solar power source. Grid tied inverters with solar array voltage above 250 VDC need a disconnect rated for 600 VDC. Many utility companies require an AC disconnect between the grid tied inverter and AC breaker box close to the AC service entrance with a visible and lockable handle.