Switching Elements for Switch Cards | Electrical Components Directory

Product Specifications

Technical details and manufacturing context for Switching Elements

Definition

Switching elements are the core functional components within switch cards that physically open or close electrical circuits to control current flow, signal routing, or power distribution in various electrical systems. They are designed for use in electrical equipment manufacturing, serving as integral parts of switch cards. These components operate by mechanical movement (contacts opening/closing) or solid-state semiconductor action to establish or interrupt electrical paths, responding to control signals from the switch card's logic circuitry. Typical materials include copper alloy contacts, silver plating, and thermoset plastic housing. Key parameters include rated voltage up to 250 V AC, rated current up to 16 A, contact resistance ≤50 mΩ (initial, after life test ≤100 mΩ), insulation resistance ≥1000 MΩ at 500 V DC, dielectric strength 2000 V AC for 1 minute, operating temperature range -40 to 85 °C, mechanical life 1,000,000 cycles (no load), electrical life 100,000 cycles (at rated load), degree of protection IP40–IP65, contact material AgSnO2, terminal type screw (also available: PCB, quick-connect), mounting type DIN rail (35 mm rail), and weight 0.15–0.25 kg per unit. These values are directory reference ranges and must be confirmed for the actual model/application. Standards such as IEC 60947, IEC 60512, IEC 60255, IEC 60068, IEC 60529, and DIN 43880 are listed as procurement/verification references, not as proof of certification or compliance. Always verify model-specific values and standards with the legal manufacturer or supplier.

Working Principle

Switching elements operate by mechanical movement (contacts opening/closing) or solid-state semiconductor action to establish or interrupt electrical paths. They respond to control signals from the switch card's logic circuitry. In mechanical types, an actuator moves contacts to make or break the circuit; in solid-state types, semiconductor devices switch on/off. The choice depends on load, speed, and environment. Proper selection requires considering voltage, current, contact resistance, insulation, dielectric strength, temperature range, mechanical/electrical life, protection degree, contact material, terminal type, mounting, and weight. Maintenance signals include increased contact resistance, arcing, or failure to operate. Failure boundaries include exceeding rated voltage/current, operating outside temperature range, or exceeding life cycles.

Common Materials

Copper alloy contacts, Silver plating, Thermoset plastic housing

Technical Parameters

Parameter	Typical range	Notes & selection driver
Rated Voltage	250 V AC	Maximum continuous voltageIEC 60947
Rated Current	16 A	Continuous current ratingIEC 60947
Contact Resistance	≤50 mΩ	Initial value, after life test ≤100 mΩIEC 60512
Insulation Resistance	≥1000 MΩ	At 500 V DCIEC 60255
Dielectric Strength	2000 V AC	For 1 minute, no breakdownIEC 60255
Operating Temperature Range	-40–85 °C	Extended range availableIEC 60068
Mechanical Life	1000000 cycles	No load operationsIEC 60947
Electrical Life	100000 cycles	At rated loadIEC 60947
Degree of Protection	IP40–IP65	Depends on housingIEC 60529
Contact Material	AgSnO2	Silver tin oxide, low arc erosion
Terminal Type	Screw	Also available: PCB, quick-connect
Mounting Type	DIN rail	35 mm railDIN 43880
Weight	0.15–0.25 kg	Per unit

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

Contact Points Part
Physical interface for electrical conduction when closed

Material: Silver-plated copper alloy
Actuator Arm
Mechanically moves contacts between open/closed positions

Material: Stainless steel
Contact Spring Part
Provides contact pressure and return force

Material: Spring steel
Semiconductor Devices Optional
Solid-state switching element used instead of mechanical contacts.

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Switching Elements.

Applied To / Applications

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

Switch Cards

View system integration details

Manufacturers of Switching Elements

1 company lists this product among what they make. Company figures are quoted from each company's own website; every card states where the relationship came from.

NINGBO BEILUN GC-BOB INSTRUMENT CO.,LTD.

Ningbo, Zhejiang, CN

Also makes: Pressure Gauge/Sensor, Pressure Gauge, Flow Meter and 8 more

Listed on the company's own website · profile compiled by CNFX from public sources

View profile Send enquiry

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Frequently Asked Questions

What are switching elements used for?

Switching elements are used within switch cards to open or close electrical circuits, controlling current flow, signal routing, or power distribution in electrical systems.

What materials are switching elements made of?

Typical materials include copper alloy contacts, silver plating, and thermoset plastic housing. Contact material may be silver tin oxide (AgSnO2) for low arc erosion.

What are the key electrical parameters?

Key parameters include rated voltage up to 250 V AC, rated current up to 16 A, contact resistance ≤50 mΩ initial, insulation resistance ≥1000 MΩ at 500 V DC, and dielectric strength 2000 V AC for 1 minute.

How should I verify the suitability of a switching element?

Verify model-specific values and standards with the legal manufacturer or supplier. The listed parameters are reference ranges and must be confirmed for your application.

Data Basis

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

Preliminary Technical Classification

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pressure:	0 to 100 psi
other spec:	Switching frequency: up to 10 kHz, Contact rating: 1A to 30A
temperature:	-40°C to +125°C

Switching Elements

Product Specifications

Industry Taxonomies & Aliases

Applied To / Applications

Industrial Ecosystem & Supply Chain Structure

Application Fit & Sizing Matrix

Reliability & Engineering Risk Analysis

Compliance & Manufacturing Standards