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Polymer Housed Gapless Surge Arrester for Lightning Protection

This series of surge arresters utilizes ZnO (zinc oxide) nonlinear resistive discs and a fully sealed polymer housing design, specifically engineered to provide lightning and switching overvoltage protection for 3kV-36kV medium-voltage power systems. Compliant with IEC 60099-4 and IEEE C62.11 standards, these gapless arresters feature ultra-fast response (≤25 ns) and high energy absorption (nominal discharge current: 10 kA), effectively safeguarding transformers, switchgear, and other critical equipment against lightning strikes and switching surges. Suitable for both AC/DC systems with IP67 protection, they are ideal for substations, overhead lines, and industrial power distribution applications, offering a design lifespan of ≥25 years.

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Gapless Surge Arrester Polymer Housed Gapless Surge Arrester Surge Arrester for Lightning Protection Surge Arrester

Product Advantages

Technical Parameters

Applications

FAQ

Product Overview

The Industrial MCCB Circuit Breaker for Electrical Panel Protection is a high-performance, modular device designed to safeguard low-voltage electrical systems in industrial and commercial environments. With a rated voltage of AC 690V and a current range of 32A to 630A, this circuit breaker offers reliable protection against overloads, short circuits, and ground faults. Engineered for durability and compliance, it features certifications including CE, CCC, and ISO 9001, ensuring adherence to international safety and quality standards. Ideal for demanding applications, it balances robust functionality with ease of installation, making it a preferred choice for electrical panel designers and system integrators.

Gapless Surge Arrester

Product Features

1. High Breaking Capacity

The MCCB delivers a breaking capacity of 50kA at 400V and 35kA at 690V, effectively interrupting high fault currents to prevent equipment damage and downtime. This dual-rated capability suits diverse voltage systems, from standard 400V industrial setups to 690V applications in sectors like mining and heavy machinery.

2. Wide Current and Voltage Range

With a rated current spanning 32A to 630A and compatibility with AC 690V, the breaker accommodates both small-scale distribution panels and large industrial switchgear. Its flexibility ensures seamless integration into systems with varying load requirements, eliminating the need for multiple breaker types.

3. Extended Operational Life

Featuring a mechanical life of 7,000 operations and an electrical life of 1,500 cycles, this MCCB minimizes maintenance intervals and reduces long-term operational costs. The robust design withstands frequent switching and harsh conditions, ensuring consistent performance over extended periods.

4. Flexible Mounting Options

The breaker supports vertical, horizontal, and bottom mounting orientations, allowing adaptability to confined spaces or complex panel layouts. This versatility streamlines installation and optimizes space utilization in diverse environments.

5. IP40 Protection Class

Rated IP40, the MCCB provides protection against solid objects larger than 1mm (e.g., tools, debris) while excluding water ingress. This rating is suitable for indoor applications where dust and accidental contact are primary concerns, such as control rooms and manufacturing facilities.

6. Comprehensive Certifications

Certified under CE, CCC, and ISO 9001, the product meets strict safety and quality benchmarks. CE compliance ensures suitability for EU markets, while CCC certification facilitates entry into China and select Asian regions. ISO 9001 highlights the manufacturer’s commitment to consistent, customer-centric processes.

Parameter

Value

Rated Voltage (Ur)

3 kV – 36 kV

Nominal Discharge Current (In)

5 kA

10 kA

Maximum Discharge Current (Imax)

65 kA

100 kA

Long-Duration Current

150 A

250 A (2 ms square wave)

Pressure Relief Capacity

16 kA

20 kA

Creepage Distance

≥31 mm/kV

Housing Material

Silicone rubber composite polymer

Protection Rating

IP67

Certifications

IEC 60099-4

IEEE C62.11

Industrial Facilities

Power Distribution: Safeguards main and branch circuits in factories, refineries, and chemical plants.

Motor Control Centers (MCCs): Protects motors and drives in conveyor systems, pumps, and compressors.

Commercial Buildings

Office Complexes: Ensures reliable power supply to lighting, HVAC systems, and elevators.

Data Centers: Mitigates risks of downtime in critical IT infrastructure through precise fault detection.

Renewable Energy

Solar and Wind Farms: Integrates into inverters and grid connection systems to manage fluctuating energy flows.

Battery Energy Storage Systems (BESS): Provides fault protection in energy storage arrays.

Mining and Heavy Machinery

Underground Mining: Withstands harsh conditions and high voltage demands in mining equipment.

Construction Machinery: Protects electrical systems in cranes, excavators, and generators.

Smart Grid Infrastructure

Grid Substations: Supports efficient energy distribution and grid stability in modern power networks.

Q1: What is the difference between the breaking capacity at 400V and 690V?

The breaker achieves 50kA at 400V and 35kA at 690V. Higher voltage systems require lower breaking capacity due to the inverse relationship between voltage and current in fault conditions. This design ensures optimal performance across diverse voltage levels.

Q2: How does the IP40 rating affect the product’s usability?

IP40 certification means the MCCB resists solid particles ≥1mm (e.g., dust, tools) but is not waterproof. It is suitable for dry indoor environments like control rooms or enclosed switch gear cabinets. For wet or dusty outdoor use, consider additional protective enclosures.

Q3: Are the CE and CCC certifications recognized globally?

CE: Valid across the EU and EFTA states, enabling market access in Europe.

CCC: Mandatory for products sold in mainland China and accepted in select Southeast Asian and African markets.

ISO 9001: Demonstrates adherence to international quality management standards, enhancing trust among global buyers.

Q4: Does the mounting orientation impact performance?

No. The MCCB's design supports vertical, horizontal, or bottom mounting without compromising functionality. This flexibility simplifies installation in panels with space constraints or specific layout requirements.