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Schneider Acti9 iSD Surge Disconnector
Model: A9L16696
4-hour response · Pricing in SAR · Delivery across all KSA regions
A9L16696 — Schneider Acti9 iSD Surge Disconnector
The Schneider Electric Acti9 iSD is a thermally protected surge disconnector designed to serve as the backup thermal disconnection device for Acti9 iPRD Type 2 surge protection devices when the iPRD's internal thermal disconnector operates, preventing sustained overload current from flowing through a degraded SPD varistor and eliminating the fire risk that can arise when a failing SPD varistor enters thermal runaway without a properly coordinated upstream disconnect. The iSD connects in series with the iPRD in the distribution board's DIN rail, providing a current-limiting fuse-like protective function rated at 20 kA at 400 V — coordination-tested with the iPRD varistor cartridge to ensure that fault energy is interrupted before the iPRD housing is damaged. A green/red indicator window shows iSD operational/operated status, and the volt-free output contact signals the iSD's operated state to a remote alarm or BMS system.
The iSD is mandatory in IEC 60364-5-53 compliant SPD installations where the upstream SCPD (short-circuit protective device) exceeds the SPD's short-circuit current withstand rating — a common situation in Saudi commercial buildings where main distribution board MCBs are rated at 10 kA or 16 kA but the iPRD is only rated for 3 kA SCPD. The Acti9 iSD is tested in combination with the iPRD as a coordinated system per IEC 61643-11 Annex C, providing documented coordination that satisfies Saudi electrical inspection requirements for SPD-iSD combination documentation. Its compact 1.5 DIN module width matches the 1-module-per-pole iPRD dimension, maintaining a consistent panel layout when both devices are installed together.
In Saudi Arabia, the iSD is specified as standard alongside every iPRD installation in commercial building distribution boards by electrical consultants following IEC 60364-5-53 strictly — a growing practice as SASO adopts IEC standards more rigorously for new building electrical inspection sign-off. Large commercial building projects in Riyadh's KAFD, hospital distribution board designs by healthcare engineering consultants, and ARAMCO facility electrical specifications increasingly require iSD-iPRD combination documentation as part of the electrical panel design package.
Razz Middle East stocks Acti9 iSD modules as a standard line item alongside iPRD SPDs, providing coordinated SPD-iSD combination supply for complete surge protection system installations across Saudi Arabia. We include IEC 61643-11 Annex C coordination test certificate documentation with every iSD-iPRD supply.
Technical Specifications
Full specifications for the A9L16696
- Function
- Series surge disconnector for SPD
- Short-Circuit Rating
- 20 kA at 400 V
- Coordination
- IEC 61643-11 Annex C tested with iPRD
- Status Indicator
- Green/red window
- Remote Signalling
- Volt-free contact
- Width
- 1.5 DIN modules
- Voltage
- 230/400 V AC
- Standard
- IEC 61643-11
Key Features & Benefits
- IEC 61643-11 Annex C coordination testing with Acti9 iPRD provides documented SPD-disconnector combination certification required for Saudi electrical panel design package approvals.
- 20 kA short-circuit current rating at 400 V coordinates safely with main distribution board 10 kA and 16 kA MCBs, eliminating the SCPD coordination gap that creates SPD fire risk.
- Series installation upstream of iPRD in DIN rail prevents sustained overload current from flowing through a degraded varistor in thermal runaway, eliminating the principal fire risk of unprotected SPD failure.
- Green/red status indicator window provides local operated status confirmation without measuring instruments, enabling quick health check during distribution board inspection rounds.
- Volt-free output contact signals iSD operated state to BMS, SCADA, or alarm panel, satisfying IEC 60364-5-53 mandatory SPD monitoring requirements for critical commercial building installations.
- 1.5 DIN module compact width matches the iPRD's 1 DIN module per pole footprint, maintaining an orderly panel layout when iSD and iPRD are installed as a coordinated pair.
- No moving mechanical parts beyond the thermal element ensure that iSD service life matches the distribution board's maintenance interval, with no periodic replacement required unless operated.
Industrial Applications in Saudi Arabia
- IEC 60364-5-53 compliant SPD installation in Saudi commercial building distribution boards where main MCBs exceed iPRD SCPD rating, mandatory for SASO electrical inspection sign-off.
- Hospital critical power distribution board SPD protection in Ministry of Health facility projects, where iSD-iPRD combination certification is required in the panel design submission to healthcare engineering consultants.
- KAFD commercial tower distribution board SPD installations in Riyadh, where electrical consultants applying IEC 60364-5-53 strictly require documented iSD-iPRD coordination for inspection approval.
- ARAMCO facility electrical panel SPD installations at new construction projects, where the engineering standard SAES-P documentation requirement covers SPD-iSD coordination certification.
- NEOM building distribution board SPD systems, where the project's international engineering standards mandate full IEC 60364-5-53 compliance including iSD upstream coordination device.
- Data centre UPS bypass panel SPD installations, where the high SCPD ratings of data centre MCBs require iSD to bridge the coordination gap between upstream protective device and iPRD rating.
- Solar PV AC-side distribution board SPD coordination, where iSD protects the iPRD from high fault current of the grid-connected inverter output during combined lightning and grid fault events.
Industrial Supplier in Saudi Arabia
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Frequently Asked Questions — A9L16696
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