Switchgear Enclosures

 Inverter Switchgear Module

apolloModel: ISM 120/240

Save time on every installation. The Apollo Solar Inverter Switchgear Module fits all Apollo Inverters and Charge Controllers


ISM white bckground photoThe Apollo Solar ISM 120/240 comes factory assembled with the inverter breakers for DC input and AC input/output/bypass breakers, and slots for 18 DIN rail half-inch wide breakers.

Designed for the optional ready-to-add Apollo Solar Breaker Pacs for the T80 or T80HV MPPT Charge Controller, ground fault protection, and generator/grid selector. With the AC and DC disconnects, busbars, shunt and connectors in a single enclosure, installers need only connect the PV Input, battery cables, AC load, and optional AC line/generator input from the outside, providing a complete plug-and-play solar power switchgear package for quick, fail-safe installation. The ISM 120/240 fits all versions of the Apollo TrueSineWave, Split-Phase Inverter as well as the Apollo T80 and T80 High Voltage MPPT charge controllers.

The Apollo ISM provides 120/240VAC split phase, 120VAC single phase (or 230VAC power for the global market) with the selection of the optional Apollo Solar AC Circuit Breaker Pacs, all at the low cost of an appliance that is built, wired, and tested at the factory. With a footprint of only 11″ wide, 15″ tall and 7″ deep, and a weight of only 11 pounds, the ISM is easily installed in tight spaces and in combination with TSW inverters and charge controllers, provides a complete power center with PV input.

The ISM 120/240 Ships Fully Assembled with:
  • Powder coated Aluminum cabinet and mounting hardware
  • Three 40Amp, 120/240 VAC, two-pole, DIN-rail breakers for AC input, inverter bypass, and AC output to load
  • One F frame 250A 3/8” stud inverter DC input breaker
  • One Ground bus bar
  • One AC Neutral bus bar
  • One System negative terminal bus bar
  • One Battery positive terminal bus plate
  • One 500Amp/50mV shunt
  • AC Input and Output wires (THHN) for the TSW Inverter Room to expand – total knock-out positions for 18 single pole ½” (13mm) wide DIN rail AC or DC breakers.

The wiring box has clearly labeled connectors for the PV array input, the battery cables, and a second bypass toggle space is provided for optional generator input. The ISM 120/240 ships fully assembled, is UL 1741 Certified and NEC Compliant, and carries a standard 5-year warranty.

Apollo ISM 120/240 Specifications

Battery Voltages 24 or 48 VDC nominal
PV Input Range with T80 Up to 70 Amps, 16 to 112VDC operating. 140VDC Max Open Circuit Voltage
PV Input range with T80HV Up to 70 Amps, 24 to 160VDC operating, 200VDC Max Open Circuit Voltage
Data Comm Options ASNET Apollo Network available for optional Communications Gateway/RD-Wired
Connectors PV input: Distribution Block accepts #14 to #2. AC: Terminals accept #14 to #6.
Battery Terminals: 3/8” hex bolts accept up to a pair of #4/0 AWG cables lugs.
Unit Dimensions 15“ tall X 11“ wide X 7.25“ deep. (381x280x184mm) Shipping: 19” x 12” x 11”
Weight Unit: 11 lbs. (4.8kg) Shipping weight: 16 lbs. (7.1 kg)
Environmental Rating Indoor Type 1
Optional Accessories AC Breakers for 120VAC and for 230VAC, DC Breakers and GFP pacs for the T80 and for the T80HV Charge Controllers, Remote Monitor, and Generator Selector
Spec Sheet    Manual


 Breaker Pack  High Voltage Breaker Pack  Generator Selector Switch
 Model: ISM-T80-DC Pac Model: ISM-T80HV-DC Pac  Model: ISM-GEN SELECTOR
 DC Ciruit Breakers to add a T80 to the ISM  DC Circuit Breakers to add a T80HV to the ISM  Add Generator input to ISM
 Product Details  Product Details