Disconnect Switch Components

Part Number	Description / PDF	Quantity
KER3125RS UL Altech Corporation	ENCLDISCSWITCH SS+HNDL3P 125A600	0
S-AL Altech Corporation	ALARM SWITCH FOR S-TD 15-125AS-T	0
KEM380CUL Y/R Altech Corporation	ENCLOSED DISC SWITCH 3P 80A600VY	5
KER4100UL Altech Corporation	ENCLDISCSWITCH STAINLESS4P 100A6	2
KEM380CUL Altech Corporation	ENCLOSED DISC SWITCH 3P 80A600V	5
KEA3125UL Y/R Altech Corporation	ENCLOSED DISC SWITCH 3P 125A600V	0
KER440R UL Altech Corporation	ENCLDISCSWITCH STAINLESS4P 40A60	0
KU4125N Altech Corporation	MOTOR DISCONNECT SWITCH 4P EXTEN	0
KER480UL Y/R Altech Corporation	ENCLDISCSWITCH STAINLESS4P 80A60	2
KER3100UL98 Y/R Altech Corporation	SS ENCL DISCON SWITCH 3 POLE	0
OKA/VKA 1.V Y/R Altech Corporation	DOOR MOUNTING KIT YELRED USE W V	3
VKA480N Altech Corporation	MOTOR DISCONNECT SWITCH 4P 80A 6	2
H12UM Altech Corporation	AUXILIARY SWITCH 1 NO2 NC CONTAC	29
KER325UL Altech Corporation	ENCLDISCSWITCH STAINLESS3P 25A60	0
S-FH3-60 Altech Corporation	DOOR INTLK MECH FOR S-TS400 300-	0
KEM340 Y/R U Altech Corporation	ENCLOSED SWITCH(U2)40A600V 3PYEL	5
KER440UL Altech Corporation	ENCLDISCSWITCH STAINLESS4P 40A60	0
VV. 1-0-2 Y/R/300MM Altech Corporation	CHANGEOVER KIT FOR VKA380-160N	0
KET380UL Altech Corporation	ENCLOSED DISC SWITCH 3P 80A600V	1
KER325RS UL Altech Corporation	ENCLDISCSWITCH SS+HNDL3P 25A600V	0

Disconnect Switch Components

1. Overview

Disconnect Switch Components are electrical devices designed to manually or automatically interrupt electrical circuits. They serve as critical safety components for circuit isolation, overload protection, and equipment maintenance. These switches ensure safe disconnection of power in industrial, commercial, and residential systems, complying with international safety standards such as IEC 60947 and UL 508. Their importance grows with the expansion of smart grid systems, renewable energy integration, and industrial automation.

2. Main Types and Functional Classification

Type	Functional Features	Application Examples
Manual Disconnect Switch	Physical toggle/lever operation, visual contact break	Industrial machinery maintenance panels
Circuit Breaker Switch	Automatic tripping under overload/fault conditions	Building electrical distribution boards
Rotary Selector Switch	Multi-position mechanical selection with detents	Machinery mode selection (e.g., HVAC systems)
Push-button Disconnect	Spring-loaded momentary contact operation	Emergency stop circuits in manufacturing lines
Smart Disconnect Switch	IoT-enabled remote control and status monitoring	Smart grid substations and renewable energy systems

3. Structure and Composition

Typical disconnect switches consist of: - Enclosure: Flame-retardant polymer or metal alloy housing - Contact System: Silver-plated copper contacts with arc suppression chambers - Actuation Mechanism: Mechanical linkage or solenoid-driven systems - Terminal Blocks: Screw/clamp-type connections for wire termination - Indicator Windows: Visual contact position verification Modern designs integrate thermal sensors for overload protection and magnetic arc quenching systems.

4. Key Technical Specifications

Parameter	Importance
Rated Voltage (600VAC/DC max)	Determines application voltage range compatibility
Current Rating (10-6000A)	Defines maximum continuous operational current
Short-circuit Withstand (kA)	Measures fault current tolerance
Operation Life (Mechanical/Electrical)	Indicates durability (typically 10,000-100,000 cycles)
Insulation Resistance (>100M )	Ensures safety isolation between contacts
Ambient Temperature Range (-40 C to +85 C)	Defines operational environmental limits

5. Application Fields

Industrial Automation: PLC control cabinets, robotic assembly lines
Energy Systems: Solar inverter isolation switches, wind turbine disconnects
Transportation: EV charging station safety disconnects, rail traction systems
Commercial Infrastructure: HVAC system isolation switches, emergency lighting controls
Medical Equipment: MRI machine power isolation, surgical tool safety switches

6. Leading Manufacturers and Products

Manufacturer	Representative Product
Schneider Electric	PowerPact Molded Case Circuit Breakers
Siemens AG	3SK1 Safety Disconnect Switches
ABB Group	E max X1 Circuit Breaker Series
Omron Corporation	ZEN-10C2A-D12D
TE Connectivity	Circuit Breakers

7. Selection Recommendations

Key selection criteria: - Match voltage/current ratings with system requirements (20% safety margin recommended) - Environmental factors (dust/water ingress protection - IP65 minimum for industrial) - Certification compliance (CE, UL, RoHS) - Maintenance accessibility (modular designs preferred) - Integration capabilities (smart switches with Modbus/Modbus TCP interfaces) - Cost-benefit analysis between mechanical and electronic switch solutions

8. Industry Trends

Future developments focus on: - Smart Integration: Embedded IoT sensors for predictive maintenance - Miniaturization: 40% size reduction in industrial switches by 2027 (MarketResearch.com) - Environmental Compliance: Halogen-free materials and 95% recyclable components - High-voltage DC Compatibility: Designed for EV charging infrastructure (1500VDC systems) - AI-Enhanced Protection: Adaptive tripping algorithms using machine learning