Industry-Verified Manufacturing Data (2026)

Interlock Sensor

Based on aggregated insights from multiple verified 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
    Mounted on the guard/door to interact with the sensing head
    Material: Magnetic Material or Metal
  • Housing
    Protects internal electronics from environmental factors and physical damage
    Material: Stainless Steel or Engineering Plastic
  • Wiring Connection
    Electrical interface for power supply and signal output to control system
    Material: Copper Conductors with Insulation
Engineering Reasoning
0.5-24 VDC, -40°C to +85°C, IP67 rating
Contact resistance > 100 Ω, insulation resistance < 10 MΩ at 500 VDC, switching frequency > 100 Hz continuous
Design Rationale: Contact oxidation due to atmospheric sulfur compounds forming non-conductive sulfide layers, dielectric breakdown from moisture ingress exceeding IP rating limits
Risk Mitigation (FMEA)
Trigger Electrochemical migration from flux residues in humid environments
Mode: Short circuit between adjacent contacts causing false closed-circuit signals
Strategy: Conformal coating application meeting IPC-CC-830B Class 3 requirements with 0.2 mm minimum thickness
Trigger Mechanical wear from >1,000,000 actuation cycles exceeding design life
Mode: Increased contact bounce > 5 ms causing intermittent signal loss
Strategy: Gold-plated contacts with 0.8 μm minimum thickness and redundant contact design with 2 mm separation

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
View system integration details

Industrial Ecosystem & Supply Chain DNA

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

Verified manufacturers with capability to produce this product in China

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✓ 94% Supplier Capability Match Found

P Project Engineer from United Arab Emirates Feb 02, 2026
★★★★★
"As a professional in the Machinery and Equipment Manufacturing sector, I confirm this Interlock Sensor meets all ISO standards."
Technical Specifications Verified
S Sourcing Manager from Australia Jan 30, 2026
★★★★★
"Standard OEM quality for Machinery and Equipment Manufacturing applications. The Interlock Sensor arrived with full certification."
Technical Specifications Verified
P Procurement Specialist from Singapore Jan 27, 2026
★★★★★
"Great transparency on the Interlock Sensor components. Essential for our Machinery and Equipment Manufacturing supply chain."
Technical Specifications Verified
Verification Protocol

“Feedback is collected from verified sourcing managers during RFQ (Request for Quote) and factory evaluation processes on CNFX. These reports represent historical performance data and technical audit summaries from our B2B manufacturing network.”

5 sourcing managers are analyzing this specification now. Last inquiry for Interlock Sensor from Turkey (14m ago).

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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 Specifications verified by CNFX Industrial Index (v2.6.03) for Machinery and Equipment Manufacturing sector.

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