IMO Technical Brochure
8 www.imopc.com + sales@imopc.com ( 01707 414 444
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TRUE DC Isolators for PV Systems
Market-leading design
2, 4, 6 & 8 pole versions available
Max. rated current 85A@1000VDC
(acc. to DC21B/DC-PV1 for SI55)
Range of mounting options
Guaranteed arc suppression (3ms typical)
Operator independent switching mechanism
Knife-edge contacts
Innovators in TRUE DC isolation
Since its launch, the SI range of TRUE DC isolators has set the benchmark safety standard for disconnection and isolation of the DC panel
load in solar applications world-wide. Prior to the introduction of the SI series, AC modied isolators in multi-pole linked form were
commonly used with all the performance and safety issues that such devices presented.
The SI TRUE DC range was specically developed to meet the needs of the solar industry with full operator independent switching
mechanism, a guaranteed 5ms maximum arc suppression time and long-life knife edge contacts. Arc chambers built-in to the unit keep
the device cool under repeated operation and the full range of mounting options provide a solution for almost every application.
Adopted as the standard by many of the largest solar equipment designers and installers around the world, the SI Series continues to set
the benchmark in solar safety.
SI Solar Isolators
UL508i
Additional Resources
There is only so much you can illustrate in printed form, so we have included a QR
code which will take you directly to the Featured Spotlight for TRUE DC isolators on
the IMO website. Here you will be able to watch a couple of videos about solar
safety and recommendations from the Institution of Engineering & Technology in
conjunction with the BRE National Solar Centre, about raising the bar for quality in
the solar PV industry.
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