IMO 4 Pole 2 String 40A DC Isolator Switch

The IMO 4 Pole 2 String 40A DC Isolator Switch (SI40-PEL64R-8T) is a panel-mount solar disconnect built for direct-current PV isolation on systems rated up to 1500 VDC. Designed for installers combining two strings, it uses four poles, knife-contact connectors and a spring-loaded snap-action mechanism for reliable switching. Rated at 40A with a 48A thermal current and an IP66 enclosure, it delivers safe, code-compliant disconnection in demanding outdoor solar installations.

Key Features:

• 40A rated, 1500 VDC voltage rating
• 4 pole, 2 string configuration
• Rated thermal current 48A
• Lockable rotary handle with SAFE-LOCK
• Arc suppression time 3 ms typical
• IP66 enclosure, panel mount with 64 x 64 escutcheon
• Short circuit withstand up to 2400A
• UL 94V-0 enclosure, UL 94V-2 handle
• Operating range -20°C to +50°C
• 12-year warranty, 7″ x 10″ x 5″, 4 lb

Ideal for residential and commercial PV arrays requiring reliable DC string isolation, this isolator suits installers building combiner and disconnect assemblies. With DC-PV1 and UL508i ratings and certifications including UL 60947-3 and IEC/EN 60947-3, it integrates into high-voltage solar systems needing dependable, lockable disconnection. Order the SI40-PEL64R-8T (also listed as SI40PEL64R8T) from Circuit Solar, in stock in Canada and shipped from Red Deer, AB.