Disconnect Switch Components

Part Number	Description / PDF	Quantity
LK11 Y/R U Altech Corporation	SWITCH KNOB ROUND RED/YELLOW	809
KU363N Altech Corporation	SWITCH DISCONNECT 60A	35545
KEM3125L Y/R Altech Corporation	SWITCH DISCT W/BOX 125A	10
KU360UL98 Altech Corporation	DISCONNECT SWITCH 3 POLE	516
KEM3100L Y/R Altech Corporation	SWITCH DISCT W/BOX 100A	33
H11UL Altech Corporation	CONTACTS AUX 1 NO/1 NC	80
K/VKA3-4P Y/R Altech Corporation	DIRECT HANDLE YELRED USE WVKA3(4	132
KER340UL Y/R Altech Corporation	SWITCH DISCT W/BOX 40A	24
KKV 332CC Altech Corporation	SWITCH DISCONCT/FUSE HOLDER 30A	21436
VKA3100N Altech Corporation	SWITCH DISCT 100A	141
KU440N Altech Corporation	MOTOR DISCONNECT SWITCH 4P EXTEN	15
KEA325UL Altech Corporation	ENCLOSED DISC SWITCH 3P 25A600V	37
OKA/KU LK10 Y/R Altech Corporation	SWITCH MOUNTING KIT RED/YELLOW	68
KU3100UL98 Altech Corporation	DISCONNECT SWITCH 3 POLE	8114
KU425N Altech Corporation	MOTOR DISCONNECT SWITCH 4P EXTEN	1730
L100AD11-ST Altech Corporation	DOOR INTERL SHAFT 100MMSTEEL USE	168326
OKA/VKA4P 0.V Y/R Altech Corporation	DOOR MOUNTING KIT FOR VKA SW 4P	62
L300AD11-ST Altech Corporation	SWITCH REMOTE SHAFT 300MM	871581
KU316N Altech Corporation	SWITCH DISCT 16A	26524
KU340N Altech Corporation	SWITCH DISCONNECT 40A	117347

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