Top 10 Types of Outdoor Isolator Switches to Buy

No.	Outdoor Isolator Type	Typical Voltage	Typical Current	Poles	Common Application	Typical Enclosure	Key Selection Consideration
1	Outdoor AC Rotary Isolator	230/400 V AC	16–160 A	2–4	Outdoor air-conditioning units, pumps, fans, and small machinery	IP65–IP66 polycarbonate or metal enclosure	Choose a load-break-rated model with a lockable handle and adequate motor-switching category.
2	Outdoor DC Solar Isolator	600–1,500 V DC	16–63 A	2–4	Photovoltaic string and inverter DC disconnection	IP65–IP66 UV-resistant enclosure	Use only a DC-rated switch; verify the voltage per pole, current, polarity, and PV utilization category.
3	Fused Outdoor Isolator Switch	230/400 V AC; selected DC systems	20–630 A	2–4	Outdoor feeders, distribution boards, transformers, and industrial equipment	IP54–IP66 metal or insulated enclosure	Match the fuse size, fuse class, short-circuit rating, and available space for heat dissipation.
4	Heavy-Duty Enclosed Isolator	400–690 V AC	63–630 A	3–4	Industrial motors, compressors, conveyors, and outdoor process equipment	IP65–IP66 metal enclosure	Check thermal derating, cable-gland size, fault withstand, and the required utilization category.
5	Pole-Mounted Medium-Voltage Isolator	11–36 kV AC	200–630 A	3	Overhead distribution lines, substations, and transformer isolation	Outdoor porcelain or polymer-insulated construction	Confirm insulation level, creepage distance, earthing arrangement, mechanical interlock, and local utility requirements.
6	Outdoor Load-Break Isolator	230 V–36 kV AC	16–1,250 A	2–3	Routine switching and isolation of energized low- or medium-voltage circuits	IP-rated low-voltage box or open-air MV assembly	Verify that the switch is rated to interrupt the intended load current; a plain isolator may not be opened under load.
7	Weatherproof Safety Isolator	230/400 V AC	20–100 A	2–4	Rooftop equipment, outdoor kitchens, gates, signs, and maintenance points	IP56–IP66 UV-stabilized enclosure	Select the IP rating according to rain, dust, washdown, sunlight, and impact exposure.
8	Motor-Rated Outdoor Isolator	230/400/690 V AC	16–250 A	3–4	Three-phase pumps, fans, compressors, and agricultural machinery	IP55–IP66 impact-resistant enclosure	Select the rating from the motor full-load current and confirm suitability for switching inductive loads.
9	Battery Energy Storage DC Isolator	48–1,500 V DC	63–630 A	2–4	Battery cabinets, inverters, telecom power, and microgrid systems	IP54–IP66 insulated or metal enclosure	Check DC breaking capacity, pre-charge requirements, polarity, arc control, and battery fault current.
10	Manual Transfer and Isolation Switch	230/400 V AC	40–630 A	2–4	Mains/generator changeover, standby power, and critical outdoor loads	IP54–IP66 enclosed switchgear	Use a mechanically interlocked, break-before-make arrangement unless a designed closed-transition system is required.