Unwavering in our dedication to customers and delivering cutting-edge innovations,Bepto stands as your steadfast ally on the journey ahead.
IA1CM Overhead Switch Disconnector: 17.5kV 1250A manual air-break LBS, hot-dip galvanized steel, tempered glass insulators, live working, NF C 64-140 Type I, tree network, visible opening.
Advanced IA1CM Overhead Switch Disconnector Series: Premium IACM-12/17.5/24/36kV manually operated overhead switch designed for end-of-line placement in tree-like HVA network structures, isolating substation clusters for downstream line work, compliant with NF C 64-140 Type I standard (01/1990), featuring hot-dip galvanized steel profile frame (NF A 91 121), RP5 tempered glass insulators with bronze bushing articulation, work-hardened copper blade with C-shaped profile for high short-circuit resistance and reduced heating, delivering 200-1250A rated current with 50A active load breaking, 2.5A no-load transformer breaking, 10A no-load line breaking, 12.5kA (1s) short-time withstand, 31.5kA peak withstand, 2000 mechanical cycles, visible opening position.
Live Working and Bird Protection Ready: IA1CM incorporates 25mm diameter cylindrical aluminum pins for live working (LWT), whip-type disconnect devices, tumbler-type spring-loaded snap-closing acting directly on moving shaft, telescopic tubes adjustable 300mm for 11-14m supports, phase-insulating support for bird protection, lockable control lever with insulation, providing reliable manual air-break overhead switching solution for tree network end-of-line substation cluster isolation.
| IA1CM Overhead Switch Disconnector Specifications | 12kV | 17.5kV | 24kV | 36kV | Unit |
|---|---|---|---|---|---|
| Model Number | IA1CM-12 | IA1CM-17.5 | IA1CM-24 | IA1CM-36 | – |
| Alternative Model | IACM-12 | IACM-17.5 | IACM-24 | IACM-36 | – |
| Brand | Bepto Insulation Systems | Bepto Insulation Systems | Bepto Insulation Systems | Bepto Insulation Systems | – |
| Product Type | Manually Operated Overhead Switch Disconnector (Air-Break LBS) | Manually Operated Overhead Switch Disconnector (Air-Break LBS) | Manually Operated Overhead Switch Disconnector (Air-Break LBS) | Manually Operated Overhead Switch Disconnector (Air-Break LBS) | – |
| Application Focus | End-of-Line Tree Network, Substation Cluster Isolation, Downstream Line Work | End-of-Line Tree Network, Substation Cluster Isolation, Downstream Line Work | End-of-Line Tree Network, Substation Cluster Isolation, Downstream Line Work | End-of-Line Tree Network, Substation Cluster Isolation, Downstream Line Work | – |
| Standard Compliance | NF C 64-140 Type I (01/1990), NF A 91 121 | NF C 64-140 Type I (01/1990), NF A 91 121 | NF C 64-140 Type I (01/1990), NF A 91 121 | NF C 64-140 Type I (01/1990), NF A 91 121 | – |
| Rated Voltage | 12 | 17.5 | 24 | 36 | kV |
| Rated Current | 200/400/630/1250 | 200/400/630/1250 | 200/400/630/1250 | 200/400/630/1250 | A |
| Rated Active Load Breaking Current | 50 | 50 | 50 | 50 | A |
| Rated No-Load Transformer Breaking | 2.5 | 2.5 | 2.5 | 2.5 | A |
| Rated No-Load Line Breaking Capacity | 10 | 10 | 10 | 10 | A |
| 1min Power Frequency Withstand (Phase/Earth) | 42 | 45 | 55 | 95 | kV |
| Power Frequency Withstand (Open Contacts) | 48 | 55 | 69 | 105 | kV |
| Lightning Impulse Withstand (Phase/Earth) | 75 | 95 | 125 | 170 | kV |
| Lightning Impulse Withstand (Open Contacts) | 85 | 105 | 145 | 195 | kV |
| Rated Short-Time Withstand Current | 12.5 | 12.5 | 12.5 | 12.5 | kA |
| Rated Short-Circuit Duration | 1 | 1 | 1 | 1 | s |
| Rated Peak Withstand Current | 31.5 | 31.5 | 31.5 | 31.5 | kA |
| Mechanical Life | 2000 | 2000 | 2000 | 2000 | cycles |
| Manual Operating Torque | ≤200 | ≤200 | ≤200 | ≤200 | Nm |
| Contact Opening Distance | >500 | >600 | >800 | >1030 | mm |
| Contact Pressure | 200 | 200 | 200 | 200 | N |
| Main Loop Resistance | ≤150 | ≤150 | ≤150 | ≤150 | μΩ |
| Frame Material | Hot-Dip Galvanized Steel Profile (NF A 91 121) | Hot-Dip Galvanized Steel Profile (NF A 91 121) | Hot-Dip Galvanized Steel Profile (NF A 91 121) | Hot-Dip Galvanized Steel Profile (NF A 91 121) | – |
| Articulation | Journaled on Bronze Bushing | Journaled on Bronze Bushing | Journaled on Bronze Bushing | Journaled on Bronze Bushing | – |
| Insulators | RP5 Type Tempered Glass (9 Insulators with Identical Bases) | RP5 Type Tempered Glass (9 Insulators with Identical Bases) | RP5 Type Tempered Glass (9 Insulators with Identical Bases) | RP5 Type Tempered Glass (9 Insulators with Identical Bases) | – |
| Collars | Aluminum Bronze Collars | Aluminum Bronze Collars | Aluminum Bronze Collars | Aluminum Bronze Collars | – |
| Blade Material | Work-Hardened Copper Blade (C-Shaped Profile) | Work-Hardened Copper Blade (C-Shaped Profile) | Work-Hardened Copper Blade (C-Shaped Profile) | Work-Hardened Copper Blade (C-Shaped Profile) | – |
| Blade Drive | Grease-Free Nylon Rollers | Grease-Free Nylon Rollers | Grease-Free Nylon Rollers | Grease-Free Nylon Rollers | – |
| Break Contacts | Wide Penetration/Alignment Tolerances, Permanent Contact Zone Separate from Break Contact | Wide Penetration/Alignment Tolerances, Permanent Contact Zone Separate from Break Contact | Wide Penetration/Alignment Tolerances, Permanent Contact Zone Separate from Break Contact | Wide Penetration/Alignment Tolerances, Permanent Contact Zone Separate from Break Contact | – |
| Visible Opening | Perfect Visibility of “Open” Position | Perfect Visibility of “Open” Position | Perfect Visibility of “Open” Position | Perfect Visibility of “Open” Position | – |
| Live Parts | Stainless Steel | Stainless Steel | Stainless Steel | Stainless Steel | – |
| Connections | 25mm Diameter Cylindrical Aluminum Pins for Live Working (LWT) | 25mm Diameter Cylindrical Aluminum Pins for Live Working (LWT) | 25mm Diameter Cylindrical Aluminum Pins for Live Working (LWT) | 25mm Diameter Cylindrical Aluminum Pins for Live Working (LWT) | – |
| Disconnect Devices | Whip-Type | Whip-Type | Whip-Type | Whip-Type | – |
| Closing Device | Tumbler-Type Spring-Loaded Snap-Closing (Acting Directly on Moving Shaft) | Tumbler-Type Spring-Loaded Snap-Closing (Acting Directly on Moving Shaft) | Tumbler-Type Spring-Loaded Snap-Closing (Acting Directly on Moving Shaft) | Tumbler-Type Spring-Loaded Snap-Closing (Acting Directly on Moving Shaft) | – |
| Shaft Stops | Elastic Shaft Stops at End of Travel | Elastic Shaft Stops at End of Travel | Elastic Shaft Stops at End of Travel | Elastic Shaft Stops at End of Travel | – |
| Support Brackets | Two Symmetrical Welded Galvanized Profile Elements (Support Head 100-360mm) | Two Symmetrical Welded Galvanized Profile Elements (Support Head 100-360mm) | Two Symmetrical Welded Galvanized Profile Elements (Support Head 100-360mm) | Two Symmetrical Welded Galvanized Profile Elements (Support Head 100-360mm) | – |
| Bird Protection | Phase-Insulating Support for Bird Protection | Phase-Insulating Support for Bird Protection | Phase-Insulating Support for Bird Protection | Phase-Insulating Support for Bird Protection | – |
| Mechanical Control | Lockable Control Lever with Insulation, Lower Tube with Insulation, Two Telescopic Tubes Adjustable ~300mm (Supports 11-14m), Three Roller Tube Guides | Lockable Control Lever with Insulation, Lower Tube with Insulation, Two Telescopic Tubes Adjustable ~300mm (Supports 11-14m), Three Roller Tube Guides | Lockable Control Lever with Insulation, Lower Tube with Insulation, Two Telescopic Tubes Adjustable ~300mm (Supports 11-14m), Three Roller Tube Guides | Lockable Control Lever with Insulation, Lower Tube with Insulation, Two Telescopic Tubes Adjustable ~300mm (Supports 11-14m), Three Roller Tube Guides | – |
| Support Height Range | 11-14m (15-18m with Extra Tube/Guide) | 11-14m (15-18m with Extra Tube/Guide) | 11-14m (15-18m with Extra Tube/Guide) | 11-14m (15-18m with Extra Tube/Guide) | m |
| Application | End-of-Line Tree Network, Substation Cluster Isolation, Downstream Line Work, Radial/Ring Network, Transformer Circuits, Live Working | End-of-Line Tree Network, Substation Cluster Isolation, Downstream Line Work, Radial/Ring Network, Transformer Circuits, Live Working | End-of-Line Tree Network, Substation Cluster Isolation, Downstream Line Work, Radial/Ring Network, Transformer Circuits, Live Working | End-of-Line Tree Network, Substation Cluster Isolation, Downstream Line Work, Radial/Ring Network, Transformer Circuits, Live Working | – |
Bepto is a leading Chinese company in electrical insulation, focused on developing advanced solutions for future power systems. We support transmission and distribution safety and growth, with long-term partners including State Grid, ABB, Schneider, Siemens, and GE. Our services reach clients in over 22 countries.
Bepto focuses on the global market and provides our clients with products suitable for the local market:
Unwavering in our dedication to customers and delivering cutting-edge innovations,Bepto stands as your steadfast ally on the journey ahead.