IMO SI40 2 Pole 1 String 40A DC Disconnect Switch

The IMO SI40-PEL64R-4S SI40 is a panel-mount DC isolator switch built for photovoltaic array disconnection, handling one string across a 2-pole configuration. Rated at 40A and 1500 VDC with an operating voltage range of 350 VDC to 1500 VDC, it uses knife contacts and a patented SAFE-LOCK rotary handle for dependable switching. The IP66/IP67 NEMA 4X enclosure suits demanding outdoor and rooftop installations for installers and system integrators.

Key Features:

• 40A rated, 1500 VDC voltage rating
• 2-pole, single-string configuration
• Operating range 350 VDC to 1500 VDC
• Rated thermal current 48 A
• Arc suppression time 3 ms
• Short circuit withstand 2400 A (2 poles parallel)
• SAFE-LOCK patented rotary handle, knife contacts
• IP66/IP67, NEMA 4X enclosed version
• Operating temperature -20 to 50 degC
• UL 60947-3, IEC/EN 60947-3 certified, 12-month warranty

Ideal for solar PV string disconnection in rooftop and ground-mount installations, the SI40 mounts to panels and integrates with combiner boxes and array wiring. Its wide voltage range, polarity independence, and rugged NEMA 4X enclosure make it well suited to Canadian outdoor climates and high-voltage systems up to 1500 VDC. Order the SI40-PEL64R-4S (also listed as SI40PEL64R4S) from Circuit Solar, in stock in Canada and shipped from Red Deer, AB.