Electrical Switch Module for Ignition Lock Assembly

Product Specifications

Technical details and manufacturing context for Electrical Switch Module

Definition

The Electrical Switch Module is a critical component of the Ignition Lock Assembly in motor vehicles. It functions as an electrical interface that detects the position of the ignition key and transmits corresponding signals to the vehicle's electronic control units (ECUs). Its primary role is to manage the electrical circuit that powers the starter motor and the engine's ignition system, ensuring the vehicle starts only when the correct key is inserted and turned to the appropriate position.

This module is designed for use in motor vehicle manufacturing, specifically as a part-level component within the ignition system. It is constructed with a thermoplastic housing, copper alloy contacts, and a printed circuit board (PCB), providing a robust interface between the mechanical key cylinder and the vehicle's electrical systems.

Key parameters for this module include a rated voltage of 12 V DC (per ISO 8820-1) and an operating voltage range of 9–16 V DC, ensuring functionality during voltage fluctuations. The maximum continuous current is 20 A (ISO 8820-3), with a contact resistance of ≤50 mΩ (IEC 60512-2) to minimize voltage drop and heat. Insulation resistance is ≥100 MΩ at 500 V DC (IEC 60512-3), and dielectric withstand voltage is 500 V AC for 1 minute (IEC 60512-4). The operating temperature range is -40 to 85 °C, with storage from -40 to 100 °C (ISO 16750-4). The module offers a degree of protection of IP54–IP65 (IEC 60529), mechanical life of 100,000 cycles (ISO 16750-3), and electrical life of 50,000 cycles at rated load (IEC 60947-5-1). The housing material is PA66+GF30, flame retardant V-0 (UL 94), and weight ranges from 50 to 80 g depending on connector configuration.

These values are reference ranges for directory purposes and must be verified for the specific model and application with the legal manufacturer or supplier. Standards listed are procurement references, not proof of certification or compliance.

Working Principle

The module operates based on mechanical actuation from the ignition key cylinder. When the key is turned, it physically moves internal contacts or triggers a sensor (like a Hall effect sensor or a micro-switch) within the module. This action either closes or opens an electrical circuit, or generates a digital signal. This signal is then sent to the vehicle's body control module (BCM) or engine control unit (ECU) to authorize power to the starter solenoid and fuel system, enabling engine start-up.

Common Materials

Thermoplastic Housing, Copper Alloy Contacts, PCB (Printed Circuit Board)

Technical Parameters

Parameter	Typical range	Notes & selection driver
Rated Voltage	12 V DC	Standard automotive electrical system voltageISO 8820-1
Operating Voltage Range	9–16 V DC	Ensures function during voltage fluctuationsISO 8820-1
Maximum Continuous Current	20 A	Exceeding may cause overheatingISO 8820-3
Contact Resistance	≤50 mΩ	Higher resistance causes voltage drop and heatIEC 60512-2
Insulation Resistance	≥100 MΩ	At 500 V DC; ensures safetyIEC 60512-3
Dielectric Withstand Voltage	500 V AC	No breakdown for 1 minuteIEC 60512-4
Operating Temperature Range	-40–85 °C	Outside range may cause failureISO 16750-4
Storage Temperature Range	-40–100 °C	For non-operational periodsISO 16750-4
Degree of Protection (IP)	IP54–IP65	Protection against dust and water jetsIEC 60529
Mechanical Life	100000 cycles	Number of actuations without failureISO 16750-3
Electrical Life	50000 cycles	At rated loadIEC 60947-5-1
Housing Material	PA66+GF30	Flame retardant V-0UL 94
Weight	50–80 g	Depends on connector configuration

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Components / BOM

Switch Contacts Part
Physically open or close the electrical circuit for the starter and ignition systems.

Material: Copper Alloy (e.g., Brass, Beryllium Copper)
Actuator/Sensor
Detects the mechanical position of the ignition key cylinder and triggers the electrical switching action.

Material: Plastic/Steel (actuator) or Semiconductor (sensor)
Connector Housing Part
Provides the electrical interface (wiring harness connector) to the vehicle's electrical system.

Material: Thermoplastic (e.g., PA66, PBT)
Mounting Bracket Part
Secures the module to the steering column or ignition lock housing.

Material: Steel or Zinc Alloy

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Electrical Switch Module.

Applied To / Applications

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

Ignition Lock Assembly

View system integration details

Manufacturers of Electrical Switch Module

Manufacturer profiles associated with Electrical Switch Module.

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Frequently Asked Questions

What is the function of the Electrical Switch Module?

The Electrical Switch Module detects the position of the ignition key and transmits signals to the vehicle's ECUs to manage the electrical circuit that powers the starter motor and ignition system, ensuring the vehicle starts only with the correct key in the proper position.

What are the key electrical parameters?

Rated voltage is 12 V DC, operating voltage range is 9–16 V DC, maximum continuous current is 20 A, contact resistance is ≤50 mΩ, insulation resistance is ≥100 MΩ at 500 V DC, and dielectric withstand voltage is 500 V AC for 1 minute. These are reference values; verify with the manufacturer for your specific model.

What environmental conditions can it withstand?

The module operates in -40 to 85 °C and can be stored in -40 to 100 °C. It has an IP54–IP65 degree of protection against dust and water jets. Mechanical life is 100,000 cycles, and electrical life is 50,000 cycles at rated load.

How should I verify the suitability of this module for my application?

Always confirm the exact specifications, including voltage, current, temperature range, and connector configuration, with the legal manufacturer or supplier. The standards listed (e.g., ISO 8820, IEC 60512) are procurement references and do not guarantee compliance for a specific product.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records.

Preliminary Technical Classification

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current:	10A max continuous, 30A peak
voltage:	12V DC nominal, 24V DC max
temperature:	-40°C to 125°C
operating cycles:	100,000 cycles minimum

Electrical Switch Module

Product Specifications

Industry Taxonomies & Aliases

Applied To / Applications

Industrial Ecosystem & Supply Chain Structure

Application Fit & Sizing Matrix

Reliability & Engineering Risk Analysis

Compliance & Manufacturing Standards