Structured Manufacturing Data (2026)

Interlock Sensor

Based on aggregated insights from structured factory profiles within the CNFX directory, the standard Interlock Sensor used in the Machinery and Equipment Manufacturing sector typically supports operational capacities ranging from standard industrial configurations to heavy-duty production requirements.

Technical Definition & Core Assembly

A canonical Interlock Sensor is characterized by the integration of Sensing Head and Actuator/Target. In industrial production environments, manufacturers listed on CNFX commonly emphasize Stainless Steel Housing construction to support stable, high-cycle operation across diverse manufacturing scenarios.

A safety device that detects the position or status of a guard, door, or access point to prevent machine operation when unsafe conditions exist.

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Product Specifications

Technical details and manufacturing context for Interlock Sensor

Definition
A critical component within Safety Interlock & Viewport systems that monitors whether protective guards, doors, or access panels are properly closed and secured. It ensures machinery cannot operate when safety barriers are open, preventing operator exposure to hazardous moving parts, high temperatures, or other dangers.
Working Principle
The sensor detects the physical position of a guard or door through various methods (magnetic, mechanical, proximity, or RFID). When the guard is open, the sensor sends a signal to the machine's control system to prevent startup or initiate immediate shutdown. When properly closed, the sensor allows normal operation.
Common Materials
Stainless Steel Housing, Polycarbonate Lens, Copper Wiring, Magnetic/Electronic Sensing Elements
Technical Parameters
  • Sensor dimensions and mounting requirements (mm) Customizable
Components / BOM
  • Sensing Head
    Detects the presence/position of the guard through magnetic, mechanical, or proximity methods
    Material: Stainless Steel or Polycarbonate
  • Actuator/Target Part
    Mounted on the guard/door to interact with the sensing head
    Material: Magnetic Material or Metal
  • Housing Part
    Protects internal electronics from environmental factors and physical damage
    Material: Stainless Steel or Engineering Plastic
  • Wiring Connection Part
    Electrical interface for power supply and signal output to control system
    Material: Copper Conductors with Insulation

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Interlock Sensor.

machinery safety interlock sensor industrial guard position sensor stainless steel interlock device machine access point safety sensor magnetic interlock sensor for equipment

Applied To / Applications

This component is essential for the following industrial systems and equipment:

Safety Interlock & Viewport
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Industrial Ecosystem & Supply Chain Structure

Complementary Systems
Downstream Applications
Specialized Tooling

Application Fit & Sizing Matrix

Operational Limits
pressure: 0 to 1 bar (ambient pressure only)
other spec: IP67 ingress protection, 10-30V DC supply voltage, 100mA max current
temperature: -20°C to +85°C
Media Compatibility
✓ Metal machine guards ✓ Plastic safety doors ✓ Industrial enclosures
Unsuitable: High-vibration environments (>10g acceleration)
Sizing Data Required
  • Guard/door travel distance
  • Required response time (<100ms typical)
  • Mounting configuration (surface or recessed)

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
False Triggering
Cause: Contamination (dust, oil, debris) interfering with sensor detection, misalignment from vibration or mechanical impact, or electrical noise/grounding issues causing signal instability.
Failure to Detect
Cause: Sensor degradation from environmental exposure (moisture, chemicals, extreme temperatures), mechanical wear/damage to sensing components, or power supply/connection failures.
Maintenance Indicators
  • Intermittent or inconsistent machine operation despite proper positioning (audible/visual alarms from control system)
  • Visible physical damage, corrosion, or accumulation of contaminants on the sensor housing or sensing face
Engineering Tips
  • Implement regular cleaning and inspection schedules using appropriate methods (e.g., non-abrasive wipes, compressed air) and verify alignment with targets using alignment tools.
  • Install protective measures such as environmental enclosures, vibration dampeners, and shielded cabling with proper grounding to reduce exposure to harsh conditions and electrical interference.

Compliance & Manufacturing Standards

Reference Standards
ISO 13849-1: Safety of machinery - Safety-related parts of control systems ANSI/UL 508: Industrial Control Equipment CE Marking (EU Machinery Directive 2006/42/EC)
Manufacturing Precision
  • Actuation Point Repeatability: +/- 0.5mm
  • Switch Contact Gap: +/- 0.1mm
Quality Inspection
  • Dielectric Strength Test (Hi-Pot)
  • Mechanical Endurance Test (Actuation Cycles)

Factories Producing Interlock Sensor

Manufacturer profiles with relevant production capability in China

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Manufacturer listings support early research and capability understanding. They are not certification, ranking, or transaction guarantees.

Technical documentation
4/5
Manufacturing capability
4/5
Inspection readiness
5/5
Supplier transparency
3/5

These scores are example evaluation dimensions, not real customer ratings, country-specific buyer feedback, or live inquiry activity.

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Frequently Asked Questions

What is the primary function of an interlock sensor in machinery?

An interlock sensor detects the position or status of guards, doors, or access points to ensure machines cannot operate when safety barriers are open or removed, preventing accidents and injuries.

What materials make this interlock sensor suitable for industrial environments?

This sensor features a stainless steel housing for corrosion resistance and durability, polycarbonate lens for impact protection, copper wiring for reliable conductivity, and magnetic/electronic sensing elements for accurate detection.

How does the interlock sensor integrate with machinery control systems?

The sensor connects via wiring to the machine's control system, sending signals when guards are properly closed. If unsafe conditions are detected, it prevents machine startup or triggers immediate shutdown to maintain safety compliance.

Can I contact factories directly on CNFX?

CNFX is an open directory, not a transaction platform. Each factory profile provides direct contact information and production details to help you initiate direct inquiries with Chinese suppliers.

Data basis: CNFX manufacturer profiles, technical classification, publicly available product information, and ongoing plausibility checks for Machinery and Equipment Manufacturing.

Data Basis

CNFX manufacturer profiles, technical classification, publicly available product information, and ongoing plausibility checks.

Preliminary Technical Classification
This page supports structured research, RFQ preparation, and supplier evaluation. It does not replace buyer-led supplier qualification, standards review, or technical approval.

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