Keylock Switches

Part Number	Description / PDF	Quantity
51-258.025D EAO	KEYLOCK SWITCH 2 POSITIONS MAIN	0
71LL36-01-2-03S Grayhill, Inc.	SWITCH KEY 3POS DP3T 250MA 115V	0
58J9A45-01-2-03N Grayhill, Inc.	SWITCH KEY 3POS DP3T 200MA 115V	0
LBW7K-3T6A IDEC	LBW FLUSH K-SEL 3-POS MAIN.	0
44L45-03-1-05S Grayhill, Inc.	SWITCH KEYLOCK 5POS SP5T 5A 115V	0
71J36-03-2-04N Grayhill, Inc.	SWITCH KEYLOCK LDER LUG, 36 DEG	0
KO130Q602 E-Switch	SWITCH KEYLOCK 2POS DPDT 4A 125V	0
M-711 Wickmann / Littelfuse	SWITCH IGNST 3POS	0
M-850 Wickmann / Littelfuse	SWITCH ROT 3POS IGN KEY SCW	445
84824-03 Honeywell Sensing and Productivity Solutions	OPERATOR CONTROLS-FLASH/KEY SWIT	0
CKM13EFW01-004 NKK Switches	SWITCH KEYLOCK 3POS SPDT 3A 250V	0
A22TK-2LL-12-03 Omron Automation & Safety Services	SWITCH KEYLCK 2POS DPST 10A 110V	0
1.10.051.604/0001 RAFI	RAMO 22 K M12 1X90V LATCHING 1NC	6
KO130QA138 E-Switch	SWITCH KEYLOCK 2POS DPDT 4A 125V	0
A22TK-2LR-02-02 Omron Automation & Safety Services	SWITCH KEYLCK 2POS DPST 10A 110V	0
LBW7K-2T3VB IDEC	LBW FLUSH K-SEL 2-POS MAIN.	0
71L30-02-4-02N Grayhill, Inc.	SWITCH KEY 2POS 4PDT 250MA 115V	0
A22TK-2LR-03-K02 Omron Automation & Safety Services	SWITCH KEYLCK 2POS 3PST 10A 110V	4
51-235.025DF EAO	KEYLOCK SWITCH 2 POSITIONS FLUSH	0
51-412.036D EAO	KEYLOCK SWITCH 2 POSITIONS MAIN	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