Keylock Switches

Part Number	Description / PDF	Quantity
YF011U2C203NQ C&K	SWITCH KEYLOCK 2POS SPDT 4A 125V	20
A421122A1NZRQ C&K	SWITCH KEYLK 2POS 4PDT 2.5A 125V	2
Y1001U2C203DQ C&K	SWITCH KEYLOCK 3POS SP3T 4A 125V	228
Y101132W203NQ C&K	SWITCH KEYLOCK 2POS SPDT 4A 125V	29
H101132F205NQ C&K	SWITCH KEYLCK 2POS SPDT 12A 125V	0
YF011U2C803NQ C&K	SWITCH KEYLOCK 2POS SPDT 4A 125V	0
P20113TCM03Q22 C&K	SWITCH KEYLOCK 2POS DPDT 4A 125V	47
Y2011U2B203NQ C&K	SWITCH KEY 2POS DPDT 4A 125V 4PC	0
YM061U2C8WCNQ C&K	SWITCH KEYLOCK 2POS SPST 4A 125V	0
Y1011U2C202NQ C&K	SWITCH KEYLOCK 2POS SPDT 4A 125V	0
Y2011U6C803RQ C&K	SWITCH KEYLOCK 2POS DPDT 4A 125V	0
A314132A1NZRQ C&K	SWITCH KEYLK 2POS 3PDT 2.5A 125V	0
Y1011C2C203NQ C&K	SWITCH KEYLOCK 2POS SPDT 4A 125V	211
YF01132C203NQ C&K	SWITCH KEYLOCK 2POS SPDT 4A 125V	129
Y2011C2C203NQ C&K	SWITCH KEYLOCK 2POS DPDT 4A 125V	212
P1011UTCM03Q22 C&K	SWITCH KEYLOCK 2POS SPDT 4A 125V	0
H100AA2F205NQ C&K	SWITCH KEYLCK 3POS SP3T 12A 125V	48
Y2011U2C2WCNQ C&K	SWITCH KEY 2POS DPDT 4A 125V 4PC	210
YF21132C803NQ C&K	SWITCH KEYLOCK 2POS DPDT 4A 125V	0
YM061U2CFWCNQ C&K	SWITCH KEYLOCK 2POS SPST 4A 125V	0

Keylock Switches

1. Overview

Keylock switches are electro-mechanical control devices requiring a physical key for operation. They serve as critical safety components in systems requiring authorized access control. These switches prevent unauthorized operation in industrial machinery, power systems, and security equipment, playing a vital role in modern safety protocols and equipment management systems.

2. Main Types and Functional Classification

Type	Functional Features	Application Examples
Mechanical Keylock	Physical key actuation, mechanical contacts	Industrial equipment start/stop controls
Electronic Keylock	Keycode verification, programmable access	Data center server racks
Smart Keylock	RFID/NFC integration, remote monitoring	Smart building automation systems

3. Structure and Components

Typical construction includes:

Actuator mechanism with key slot
Multi-position rotary switch contacts
Die-cast zinc or polymer housing
Electrical terminals (screw/clamp type)
Anti-tamper mechanical detents

Advanced models incorporate PCB-based electronic verification modules with LED status indicators.

4. Key Technical Specifications

Parameter	Typical Values	Importance
Rated Current	1-10A	Determines load capacity
Operating Voltage	12-480VAC/DC	System compatibility
Mechanical Life	50,000-200,000 cycles	Durability indicator
IP Rating	IP40-IP67	Environmental protection
Key Differentiation	100-10,000 combinations	Security level

5. Application Fields

Industrial control systems (CNC machines, robotics)
Power distribution equipment (switchgear, transformers)
Transportation (vehicle ignition systems, railway controls)
Medical equipment (MRI machines, sterilization units)
Security systems (alarm panels, access control)

Case Study: Automotive manufacturing plants use IP67-rated keylock switches for robotic arm controls, requiring both safety and washdown resistance.

6. Leading Manufacturers and Products

Manufacturer	Product Series	Key Features
Siemens	3SE5 Series	Modular design, 1000+ key combinations
Omron	TL-N Series	Micro-switch technology, vibration resistance
Schneider Electric	XKCS Series	Programmable electronic locking

7. Selection Recommendations

Assess environmental conditions (temperature, moisture, vibration)
Calculate electrical load requirements
Determine security level needs (mechanical vs electronic)
Verify mounting compatibility (panel cutout dimensions)
Evaluate key management system requirements

8. Industry Trends

Current developments include:

Integration with IoT systems for remote access monitoring
Nanocoating for enhanced corrosion resistance
Miniaturization while maintaining IP67 ratings
Adoption of wireless key authentication protocols
Standardization under ISO 14119 safety regulations