440T-MDALE10ABAD Allen Bradley

Description

Product Name:  440T-MDALE10ABAD Allen Bradley Programmable controller

Product details:

• Product Series: Guardmaster® 440T Trapped Key Interlock Switches.
• Product Type: Mechanical Trapped Key Access Interlock, Dual Key.
• Function: This device is a safety component used to enforce a strict sequence of operations, typically to ensure that power is isolated from hazardous machinery before a guard can be opened and personnel can gain access.
• Mechanism: It is a dual-key system with a lever actuator. The specific model number indicates:
  • M: Mechanical
  • D: Dual Key
  • A: Actuator: Lever
  • LE10: Lock/Access/Chain Lock, Primary Key Trapped, Secondary Key Free to Release Lever (The primary key is trapped when the guard is closed and the machine is running; removing the secondary key allows the lever to be moved to secure the guard and release the primary key, which is then used to start the isolation process).
  • ABAD: Specific Key Codes (Primary Code ‘A’, Secondary Code ‘B’, often referencing standard key coding).
• Construction: Typically constructed from robust materials like 316L Stainless Steel for high durability, resistance to corrosion, and use in harsh environments.
• Operation: Direct Drive Operation (positively opens contacts).

2. Product Parameters (产品参数)

• Series: 440T
• Lock Style/Type: Trapped Key Interlock, Dual Key Access
• Actuator: Lever Actuator
• Key Condition (Functional State – Based on the “LE” code): Primary Key Trapped, Secondary Key Free to Release Lever.
• Housing Material: 316L Stainless Steel (Common for 440T access units)
• Operating Temperature Range: (Varies by specific unit, but typically a wide range, e.g., $-20^{\circ}\mathrm{C}$ to $80^{\circ}\mathrm{C}$ or wider for stainless steel units).
• Standards/Certifications (Typical for the series): CE, UL, TUV, CCC, KC (Check specific documentation for exact compliance).
• Mechanical Life: Typically high (e.g., 200,000 operations).
• Security: Replaceable code barrel assembly; tamper-resistant screws (common features).

Note: The 440T-MDALE10ABAD is a mechanical interlock. Unlike electronic versions, it does not have electrical contacts or a solenoid, but rather controls the release of keys based purely on the physical position of the lever/guard.

3. Product Advantages (产品优势)

• High Level of Safety: Enforces a mandatory, predetermined sequence of operations, virtually eliminating the possibility of operator error when isolating machinery.
• Robust Construction: The 316L stainless steel housing offers exceptional durability and resistance to harsh industrial environments, corrosion, washdown areas, and high temperatures.
• Simple and Reliable: As a purely mechanical system, it is highly reliable, requiring no wiring or complex diagnostics for its core locking function.
• Dual Key Security: The dual-key design is ideal for access control, where one key (primary) is used for the machine isolation/start sequence and the second key (secondary) is used for guard access/release.
• Tamper Resistance: Designed with features like tamper-resistant screws and specialized key systems to prevent unauthorized defeat of the safety system.

4. Precautions (注意事项)

• Proper Installation: Must be installed according to manufacturer’s instructions and local safety standards (e.g., EN ISO 14119) to ensure the guard can only be opened when the key sequence allows.
• Key Management: A strict key management protocol is essential. Keys should never be duplicated, forced, or left unattended. The system’s integrity relies on the controlled sequence of key transfer.
• Environmental Limits: While durable, ensure the operating environment (temperature, ingress protection, etc.) remains within the specified limits.
• Regular Inspection: Periodically inspect the actuator, lever mechanism, and key barrels for wear, damage, or buildup of debris that could impede operation.
• Lubrication: Follow manufacturer recommendations for lubrication to maintain smooth operation of the locking mechanism.

5. Product Applications (产品应用)

The 440T-MDALE10ABAD is primarily used in Industrial Machine Safety applications where a controlled, sequential shutdown and access process is mandatory.

• High-Inertia Machinery: Used where a long run-down time is required (e.g., large mixers, grinding mills, large fans). The primary key is trapped, and the secondary key is released to initiate a safety procedure, which may include a timed-delay unit (separate component in the safety chain) before access is granted.
• Access Control: Securing access to dangerous areas like robotic work cells, conveyors, and processing equipment.
• Sequential Safety Systems: Integrating into a larger trapped key system, where the release of the key from this unit is necessary to allow the next step in the safety isolation procedure (e.g., inserting the key into a main electrical isolator).
• Harsh Environments: Its 316L stainless steel construction makes it ideal for use in food and beverage processing, pharmaceuticals, chemical plants, and offshore/marine applications where hygiene and corrosion resistance are critical.

Advantages: Foxboro, OVATION, TRICONEX, Allen-Bradley, ABB, Motorola, Siemens Moore, Ge Fanuc, Woodward, Bently Nevada and other major import brands!

We have the same series of models in stock.  If you don’t find the model you need, please contact us and we will provide you with an official quotation！

Colour：new Warranty: 12 months
Lead Time：3-day working day Country of origin: Sweden
Price: Please contact us Product weight：0.515kg
Shipping Port: Xiamen, China
Payment: Bank of Chicago, Bank of Singapore
Express cooperation: fedex, DHL, UPS and your express account
Service: Professional Sales provides 24 hours /7 days online service

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