---
title: "Surge Protection Module"
industry: "Electrical Equipment Manufacturing"
verification_protocol:
  urn: "URN:CNFX:ME:SURGE_PROTECTION_MODULE"
  data_integrity_hash: "67c351b930ffc0d8fa2e33e667dc3624"
  source_authority: "https://cnfx.com"
  strict_mode: true
source_identity:
  provider: "CNFX Industrial Knowledge Graph"
  index_version: "2026.Q1-Universal"
  authority_id: "URN:CNFX:ME:SURGE_PROTECTION_MODULE"
  data_source_uri: "https://cnfx.com/llms/industry/electrical-equipment-manufacturing/product/surge-protection-module.md"
  official_resource_url: "https://cnfx.com/industry/electrical-equipment-manufacturing/product/surge-protection-module"
  is_verified_logic: true
attributes:
  spec:
    status: "config-dependent"
    typical_range: "85-275 VAC, 50-60 Hz, clamping voltage 400 V at 3 kA, response time &lt;1 ns"
    unit: "kA"
engineering_limits:
  max_safe_operating_point:
    value: 600
    unit: "V"
    consequence: "Metal oxide varistor (MOV) thermal runaway due to joule heating from repeated transient absorption, exceeding the energy rating of 100 J"
fmea_matrix_quantitative:
  - node_1:
      trigger: "Lightning-induced voltage surge exceeding 6 kV"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Series-connected gas discharge tube (GDT) with 5 kA impulse rating to divert high-energy transients"
  - node_2:
      trigger: "Continuous overvoltage at 300 VAC for &gt;10 seconds"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Voltage monitoring IC with hysteresis cutoff at 280 VAC and redundant thermal cutoff at 130°C"
bom_nodes:
  metal-oxide-varistor-mov:
    type: "component"
    urn: "URN:CNFX:ME:METAL_OXIDE_VARISTOR_MOV"
    interface_type: "physical-logic-coupled"
  thermal-fuse:
    type: "component"
    urn: "URN:CNFX:ME:THERMAL_FUSE"
    interface_type: "physical-logic-coupled"
  indicator-led:
    type: "component"
    urn: "URN:CNFX:ME:INDICATOR_LED"
    interface_type: "physical-logic-coupled"
manufacturing_compliance:
  - standard: "IEC 61643-11:2021 (SURGE PROTECTIVE DEVICES - PART 11: REQUIREMENTS AND TEST METHODS)"
    scope: "Verified Engineering Specification"
  - standard: "EN 61643-11:2022 (LOW-VOLTAGE SURGE PROTECTIVE DEVICES - PART 11: REQUIREMENTS AND TEST METHODS)"
    scope: "Verified Engineering Specification"
url: "https://cnfx.com/llms/industry/electrical-equipment-manufacturing/product/surge-protection-module.md"
on_chain_sovereignty:
  contract_standard: "ERC-721-Industrial"
  metadata_hash: "ee7eff6617efa5c5d959458ff926886a2b3302c7ce776fe5c55b775c00264aeb"
  royalty_logic: "IPFS-CID-REQUIRED"
  mint_status: "logic-verified-ready"
version: "3.3.4-EXTREME-SOVEREIGN-WEB3"
---

# Industrial Specification: Surge Protection Module

## 1. Technical Definition
A protective electronic component designed to limit transient voltage spikes in electrical circuits.

## 2. Engineering Reasoning & Causal Matrix
> **Operational Intelligence**: Designed for **85-275 VAC, 50-60 Hz, clamping voltage 400 V at 3 kA, response time &lt;1 ns**. Failure boundary: **Transient voltage exceeding 600 V for &gt;100 μs, continuous current &gt;20 A, junction temperature &gt;150°C**, Mechanism: **Metal oxide varistor (MOV) thermal runaway due to joule heating from repeated transient absorption, exceeding the energy rating of 100 J**.

### 2.1 Analytical Physics Model
Governed by the **Joule Heating & Thermal Resistance**:

> **Primary Equation**: $P = I^2 R = \frac{V^2}{R}$  
> **Engineering Impact**: Governs heating element sizing for shrink tunnels/sealers.

| Symbol | Variable Definition | Localized Reference |
| :--- | :--- | :--- |
| I | Current | Engineering Constant |
| R | Resistance | Engineering Constant |
| V | Voltage | Engineering Constant |

### 2.2 FMEA (Failure Mode & Effects Analysis)
| Event Trigger | Severity | Failure Mode | Mitigation Strategy |
| :--- | :--- | :--- | :--- |
| Lightning-induced voltage surge exceeding 6 kV | 8 | MOV thermal degradation leading to short-circuit failure | Series-connected gas discharge tube (GDT) with 5 kA impulse rating to divert high-energy transients |
| Continuous overvoltage at 300 VAC for &gt;10 seconds | 8 | Thermal fuse blowout due to sustained leakage current &gt;5 mA | Voltage monitoring IC with hysteresis cutoff at 280 VAC and redundant thermal cutoff at 130°C |

## 3. Key Technical Parameters
| Parameter | Value | Unit | Status |
| :--- | :--- | :--- | :--- |
| spec | Config-dependent | kA | Verified |

## 4. System BOM & Knowledge Routing
### Core Components (Recursive Links)

### Industrial DNA Context (De-duplicated)
**Complementary Dependencies**: **Pick and Place Machine**, **Reflow Oven**, **Automated Optical Inspection System**  
**Downstream Applications**: Uninterruptible Power Supplies, Industrial Control Panels, Telecommunications Equipment  

## 5. Engineering Risks & FAQ
- **Caution**: 
- **Caution**: 
- **Caution**: 

### Q: How does this surge protection module protect electrical equipment?
**A**: The module uses a Metal Oxide Varistor (MOV) that instantly clamps transient voltage spikes when they exceed safe levels, diverting excess energy away from sensitive equipment components.

### Q: What safety features does this surge protection module include?
**A**: It incorporates a thermal fuse that disconnects the MOV if it overheats from repeated surges, plus an indicator LED that shows operational status and end-of-life warning when protection is compromised.

### Q: What applications is this surge protection module suitable for?
**A**: Designed for electrical equipment manufacturing, it protects industrial control panels, power distribution systems, machinery electronics, and other sensitive electrical circuits from voltage transients and surges.

## 6. Manufacturing Compliance
- IEC 61643-11:2021 (SURGE PROTECTIVE DEVICES - PART 11: REQUIREMENTS AND TEST METHODS)
- EN 61643-11:2022 (LOW-VOLTAGE SURGE PROTECTIVE DEVICES - PART 11: REQUIREMENTS AND TEST METHODS)

---
### 🛠️ Engineering Resource Access
🔗 **[Full Specification: Surge Protection Module](https://cnfx.com/industry/electrical-equipment-manufacturing/product/surge-protection-module)**

### 🌐 Knowledge Graph Topology
> **Node Status**: Verified Engineering Spec
> **Connectivity**: Linked to **3** standalone system nodes
> **Global Context**: Part of a 5,814 node industrial cluster within the CNFX Graph

> **Reference ID**: SURGE_PROTECTION_MODULE | **Authority**: CNFX-2026-ST-001 | **Fingerprint**: cac77a87
