---
title: "Access Door with Interlock Switch"
industry: "Machinery and Equipment Manufacturing"
verification_protocol:
  urn: "URN:CNFX:ME:ACCESS_DOOR_WITH_INTERLOCK_SWITCH"
  data_integrity_hash: "742a31bb3807650f2646b4a44b7bd5a4"
  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:ACCESS_DOOR_WITH_INTERLOCK_SWITCH"
  data_source_uri: "https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/access-door-with-interlock-switch.md"
  official_resource_url: "https://cnfx.com/industry/machinery-and-equipment-manufacturing/product/access-door-with-interlock-switch"
  is_verified_logic: true
attributes:
  spec:
    status: "config-dependent"
    typical_range: "0.5-2.0 mm switch actuation travel, 24V DC ±10% supply voltage, -20°C to +85°C ambient temperature"
    unit: "mm"
engineering_limits:
  max_safe_operating_point:
    value: 100
    unit: "m"
    consequence: "Contact pitting from electrical arcing during switch bounce (typically 1-5 ms duration), mechanical wear at actuator-cam interface (coefficient of friction μ=0.15-0.25), plastic deformation of door hinge pins at stress &gt;250 MPa"
fmea_matrix_quantitative:
  - node_1:
      trigger: "Corrosive atmosphere exposure (H2S concentration &gt;10 ppm)"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Hermetically sealed switch enclosure with IP67 rating, gold-plated contacts (2-5 μm thickness)"
  - node_2:
      trigger: "Repeated impact loading from door slamming (peak force &gt;800 N)"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Forged steel actuator with fillet radius &gt;2.0 mm, shot peening surface treatment (Almen intensity 0.008-0.012A)"
bom_nodes:
  door-panel:
    type: "part"
    urn: "URN:CNFX:ME:DOOR_PANEL"
    interface_type: "physical-logic-coupled"
  interlock-switch:
    type: "part"
    urn: "URN:CNFX:ME:INTERLOCK_SWITCH"
    interface_type: "physical-logic-coupled"
  hingeslatches:
    type: "component"
    urn: "URN:CNFX:ME:HINGESLATCHES"
    interface_type: "physical-logic-coupled"
  wiring-harness:
    type: "component"
    urn: "URN:CNFX:ME:WIRING_HARNESS"
    interface_type: "physical-logic-coupled"
manufacturing_compliance:
  - standard: "ISO 14119:2013 - SAFETY OF MACHINERY - INTERLOCKING DEVICES ASSOCIATED WITH GUARDS"
    scope: "Verified Engineering Specification"
  - standard: "ANSI/ASSE Z244.1-2016 - CONTROL OF HAZARDOUS ENERGY - LOCKOUT/TAGOUT AND ALTERNATIVE METHODS"
    scope: "Verified Engineering Specification"
  - standard: "DIN EN 1088:1995 - SAFETY OF MACHINERY - INTERLOCKING DEVICES ASSOCIATED WITH GUARDS"
    scope: "Verified Engineering Specification"
url: "https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/access-door-with-interlock-switch.md"
on_chain_sovereignty:
  contract_standard: "ERC-721-Industrial"
  metadata_hash: "76795b8153735d473e66eacfb095b19bcda5bccf844620f521634fdcb8642a75"
  royalty_logic: "IPFS-CID-REQUIRED"
  mint_status: "logic-verified-ready"
version: "3.3.4-EXTREME-SOVEREIGN-WEB3"
---

# Industrial Specification: Access Door with Interlock Switch

## 1. Technical Definition
A safety door equipped with an interlock switch that prevents machine operation when open.

## 2. Engineering Reasoning & Causal Matrix
> **Operational Intelligence**: Designed for **0.5-2.0 mm switch actuation travel, 24V DC ±10% supply voltage, -20°C to +85°C ambient temperature**. Failure boundary: **Switch contact resistance exceeding 100 mΩ, actuator misalignment &gt;0.8 mm, door deflection &gt;3.0 mm under 500 N force**, Mechanism: **Contact pitting from electrical arcing during switch bounce (typically 1-5 ms duration), mechanical wear at actuator-cam interface (coefficient of friction μ=0.15-0.25), plastic deformation of door hinge pins at stress &gt;250 MPa**.

### 2.2 FMEA (Failure Mode & Effects Analysis)
| Event Trigger | Severity | Failure Mode | Mitigation Strategy |
| :--- | :--- | :--- | :--- |
| Corrosive atmosphere exposure (H2S concentration &gt;10 ppm) | 8 | Switch contact corrosion increasing resistance to &gt;1 Ω | Hermetically sealed switch enclosure with IP67 rating, gold-plated contacts (2-5 μm thickness) |
| Repeated impact loading from door slamming (peak force &gt;800 N) | 8 | Actuator arm fatigue fracture at stress concentration point | Forged steel actuator with fillet radius &gt;2.0 mm, shot peening surface treatment (Almen intensity 0.008-0.012A) |

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

## 4. System BOM & Knowledge Routing
### Core Components (Recursive Links)
- [Door Panel](https://cnfx.com/llms/industry/fabricated-metal-product-manufacturing/product/door-panel.md) `(Standalone System)`
- [Interlock Switch](https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/interlock-switch.md) `(Standalone System)`

### Industrial DNA Context (De-duplicated)
**Complementary Dependencies**: **Safety Light Curtain**, **Emergency Stop Button**, **Programmable Logic Controller (PLC)**  
**Downstream Applications**: Packaging Machinery, Assembly Line Equipment, Industrial Robots  

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

### Q: How does the interlock switch on this access door enhance safety?
**A**: The interlock switch automatically cuts power or prevents machine operation when the door is opened, ensuring operators cannot access hazardous areas during operation, which helps meet OSHA and other safety regulations.

### Q: What materials are available for this access door, and which is best for corrosive environments?
**A**: This door comes in galvanized steel, stainless steel, and polycarbonate. Stainless steel is recommended for highly corrosive or washdown environments due to its superior corrosion resistance and durability.

### Q: Can this access door with interlock switch be integrated into existing machinery?
**A**: Yes, it is designed for easy integration with standard wiring harnesses and mounting points. The BOM includes door panel, hinges/latches, interlock switch, and wiring harness for straightforward installation on most industrial equipment.

## 6. Manufacturing Compliance
- ISO 14119:2013 - SAFETY OF MACHINERY - INTERLOCKING DEVICES ASSOCIATED WITH GUARDS
- ANSI/ASSE Z244.1-2016 - CONTROL OF HAZARDOUS ENERGY - LOCKOUT/TAGOUT AND ALTERNATIVE METHODS
- DIN EN 1088:1995 - SAFETY OF MACHINERY - INTERLOCKING DEVICES ASSOCIATED WITH GUARDS

---
### 🛠️ Engineering Resource Access
🔗 **[Full Specification: Access Door with Interlock Switch](https://cnfx.com/industry/machinery-and-equipment-manufacturing/product/access-door-with-interlock-switch)**

### 🌐 Knowledge Graph Topology
> **Node Status**: Verified Engineering Spec
> **Connectivity**: Linked to **4** standalone system nodes
> **Global Context**: Part of a 5,814 node industrial cluster within the CNFX Graph

> **Reference ID**: ACCESS_DOOR_WITH_INTERLOCK_SWITCH | **Authority**: CNFX-2026-ST-001 | **Fingerprint**: f9a332ef
