Engineering Scope & Defense Level
The Transparent Bulletproof Metering Block is a heavy-duty, maximum-security terminal assembly engineered specifically for power metering installations exposed to physical vandalism, extreme mechanical impact, or sophisticated electricity theft.
Unlike standard plastic terminal blocks, this flagship model combines a ballistic-grade, IK10 impact-rated armored Polycarbonate (PC) cover with a high-performance, flame-retardant base. It is custom-designed for harsh deployment in high-risk environments, including remote unattended outdoor substations, public transport networks (metro/railways), high-density residential zones, and industrial chemical hubs where standard infrastructure fails.
Specialized Features Based on Factory Catalog
1.IK10-Rated Ballistic Polycarbonate Shield
The Engineering: The entire cover plate is injection-molded from specialized high-density polymer polycarbonate with a minimum thickness of 3 mm. This gives it an official IK10 mechanical impact rating per IEC 62262 standards, allowing it to absorb 20 Joules of direct impact energy (equivalent to a 2 kg steel mass dropped from 1 meter) without cracking or shattering.
The Buyer Benefit: It completely resists deliberate tool assaults, brick impacts, and harsh treatment during field maintenance, achieving an extended operational design life of over 20 years.
2.360° Zero-Disassembly Visual Inspection
The Engineering: Utilizing optical-grade crystal transparency, the cover allows grid inspectors and energy auditors to perform 100% visual checks without opening the box.
The Buyer Benefit: Technicians can easily verify phase sequences, check internal thermal indicators, read meter wire status, and audit torque markings from a safe distance. This eliminates the labor cost of opening hundreds of cabinets and removes the risk of accidental flashovers or arc strikes during inspections.
3. Advanced Anti-Tamper & Dual Lead-Sealing Barriers
The Engineering: To combat commercial energy theft, the block features reinforced metal-enforced terminal guards paired with dual lead-sealing screw slots.
The Buyer Benefit: Once sealed by the utility authorities, the unit cannot be bypassed, hot-wired, or modified without permanently damaging the seals. This provides power distribution companies with bulletproof legal evidence of tampering and effectively prevents unauthorized access to the critical secondary CT/PT circuits.
4. Seamless Continuous Testing Bypass
The Engineering: Equipped with an internal short-circuit bypass layout, this metering block allows utility engineers to safely short the secondary loop of current transformers (CT) and disconnect voltage loops directly under load.
The Buyer Benefit: Field teams can calibrate or hot-swap faulty energy meters without interrupting power to the facility, successfully preventing commercial downtime and billing disputes.
Technical Specifications
| Impact rating | IK10 (IEC 62262), 20 J impact capacity |
| Cover material | Bulletproof-grade polycarbonate, ≥3 mm thickness |
| Base housing | PC, UL94 V-0 flame rating |
| System compatibility | Single-phase / three-phase (configurable) |
| Rated insulation voltage | 690 V AC |
| Rated current | 10 A – 120 A (customizable) |
| Short-time withstand current | 5 kA / 1 s |
| Contact resistance | ≤0.5 mΩ (initial) |
| Dielectric strength | ≥3.0 kV / 1 min |
| Conductor capacity | 1.5 mm² – 16 mm² (copper only) |
| Termination | Cage clamp or tubular screw with anti-corrosion coating |
| Ingress protection | IP65 (standard), IP67 (optional) |
| Operating temperature | -40 °C to +85 °C |
| Compliance | IEC 62262 (IK10), IEC 60999-1, GB/T 14048.7, CE, RoHS |
Application Scenarios
Prison and detention facility metering requiring vandal resistance and tamper proofing
Metro and tunnel distribution cabinets subject to tool strikes and falling debris
Military installations and high-security government buildings
Remote outdoor metering in rural or high-theft-risk zones
Public power panels in schools and hospitals where accidental impacts may occur
Heavy-traffic environments such as parking structures and industrial yards with forklift or pallet collision risk
Mining and heavy industry with sustained vibration and shock loads
Critical infrastructure: water treatment plants, communication base stations
Why Choose Our Transparent Bulletproof Metering Block
Proven Impact Resilience
Independently certified to IK10, our block withstands four times the impact energy of typical IK07 products, ensuring uninterrupted service in the harshest settings.
Engineered for Security
The combination of a 3 mm bulletproof transparent cover, reinforced metal terminal shields, and a sealable enclosure provides a multi-layered defense against physical attacks and electricity theft.
Operational Continuity
The built-in hot-swap bypass allows meter replacement without de-energizing the load, eliminating downtime in critical installations.
Long-Term Reliability
IP65-rated sealing, anti-corrosion terminals, and a PA66 housing deliver consistent performance across a -40 °C to +85 °C range, backed by a 5-year warranty and a design life exceeding 20 years.
Customization & Compliance
We offer OEM flexibility in dimensions, terminal layout, and cover thickness to meet specific project requirements, while full compliance with IEC, GB/T, CE, and RoHS satisfies stringent government and military procurement standards.
Dedicated Support
Our team provides rapid technical consultation, sample provision, and after-sales service to ensure seamless integration from design through installation.
Mass Production Capacity & Global Distribution
With decades of expertise in the low-voltage electrical manufacturing sector, our factory guarantees steady, high-volume production capacity to meet urgent global market demands. We operate multiple synchronized production lines utilizing precise testing instruments to inspect every batch of high-current terminals, switch terminals, and nylon cable glands before dispatch. Our optimized logistics and supply chain management enable us to offer flexible, high-volume wholesale packages with competitive factory-direct pricing structures. Whether you are a national electrical grid contractor or a regional wholesale distributor, we possess the scalability to fulfill large-scale orders without delaying delivery timelines. Our strategic geographical location ensures convenient transportation routes to major international ports, facilitating efficient shipping and customs clearance for overseas buyers seeking a long-term, high-capacity electrical manufacturing partner.
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