440G-TZS21UPRH | Allen-Bradley TLS-Z GD2 Guard Locking Switch – 24V AC/DC
440G-TZS21UPRH | Allen-Bradley TLS-Z GD2 Guard Locking Switch – 24V AC/DC
440G-TZS21UPRH | Allen-Bradley TLS-Z GD2 Guard Locking Switch – 24V AC/DC
    440G-TZS21UPRH | Allen-Bradley TLS-Z GD2 Guard Locking Switch – 24V AC/DC
440G-TZS21UPRH | Allen-Bradley TLS-Z GD2 Guard Locking Switch – 24V AC/DC

440G-TZS21UPRH | Allen-Bradley TLS-Z GD2 Guard Locking Switch – 24V AC/DC

Part #: 440G-TZS21UPRH Manufactured by: Allen-Bradley
$462.00
$462.00
2 in Stock
Condition: New – Open box
Shipping calculated at checkout.
Product Overview
Allen Bradley 440G-TZS21UPRH Guard Locking Switch TLS-Z GD2, Power to Release, Solenoid Voltage: 24V AC/DC, Contacts (Safe...  Read more
We accept:
  • American Express
  • Apple Pay
  • Diners Club
  • Discover
  • Google Pay
  • Mastercard
  • PayPal
  • Shop Pay
  • Visa
Contact Us!

Talk to a real expert.

phone
+1 (828) 222-3490
email
sales@iqelectro.com
Mon–Sat, 7:00 AM – 12:00 PM (EST)
warranty
IQElectro 2-Year Warranty
Warranty for Product #: 440G-TZS21UPRH
IQElectro offers a free 2-year warranty on all products. You can trust that every purchase is a reliable investment in the future of your company. Warranty Terms
2-3 Day Free Shipping
Packed Ready to Ship
24/7 Expert Support
Return within 30-Days
IQElectro is Not an authorized distributor for Allen-Bradley
Original Manufacturer's Warranty Not Covered, This Product is SURPLUS.

Product Description P/N: 440G-TZS21UPRH

Description / Specifications

Description

The Allen-Bradley 440G-TZS21UPRH is a TLS-Z GD2 Guard Locking Safety Switch designed for high-integrity machine guarding applications. Operating on 24V AC/DC, this power-to-release safety interlock provides secure guard locking with 2000 N (450 lb) holding force, ensuring that access doors remain locked until hazardous motion has stopped. Equipped with solid-state safety outputs and an 8-pin M12 quick-disconnect, it offers robust performance and simplified wiring for modern industrial safety systems.

 

 

Technical Specifications

Condition New / Never Used Surplus
Brand Allen-Bradley
Series / Family 440G TLS-Z GD2
Part Number 440G-TZS21UPRH
Product Type Guard Locking Safety Switch
Model Type Power to Release
Actuator Type Fully-Flex
Safety Contacts 2 N.C. PNP (0.2A max)
Auxiliary Contacts 1 N.O. PNP (0.2A max) – Lock Status
Solenoid Voltage 24V AC/DC
Holding Force 2000 N (450 lbs)
Connection Type 8-Pin M12 (Micro)
Terminal Type Plug-In QD
Housing Material Plastic
Enclosure Rating IP66, IP67
Standards / Approvals C-TICK, CCC, KC
Mounting Panel / Guard Door
Solenoid Contacts None (solid-state outputs only)

  

 

Information About 440G-TZS21UPRH

The Allen-Bradley 440G-TZS21UPRH is part of the Guardmaster TLS-Z GD2 family, engineered for reliable access-guard locking on machinery where hazardous motion must be fully stopped before entry is allowed. As a Power-to-Release model, the solenoid remains energized to unlock the guard, ensuring fail-safe operation in the event of a power loss. With 2 N.C. PNP safety outputs and 1 N.O. PNP auxiliary output, this switch provides advanced, solid-state signaling for safety relays, safety controllers, and PLCs. The auxiliary output delivers real-time lock status feedback to improve diagnostics and minimize downtime. The switch supports a fully-flex actuator, accommodating misalignment or vibration at the guard door—common in industrial environments. Rated IP66 and IP67, the TLS-Z GD2 withstands washdown, dust, and harsh conditions. The plastic housing provides corrosion resistance and long service life.

Key Features:

  • Power-to-Release guard locking safety switch
  • Fully-flex actuator compatibility for misaligned doors
  • 24V AC/DC solenoid operation
  • 2 N.C. PNP solid-state safety outputs
  • 1 N.O. PNP auxiliary lock status output
  • Heavy-duty 2000 N (450 lb) holding force
  • 8-pin M12 quick-disconnect connection
  • Plastic, corrosion-resistant housing
  • High environmental protection: IP66, IP67
  • Ideal for guard doors, hatches, and machine access panels
  • Suitable for Category 4 / PL e / SIL 3 system architectures (when used with appropriate safety controller)

The M12 8-pin quick-disconnect reduces wiring time and simplifies replacement. With a 2000 N holding force and compliance with global safety standards, the 440G-TZS21UPRH is ideal for OEMs, integrators, and safety upgrades requiring reliable guard locking.

Frequently Asked Questions about 440G-TZS21UPRH
Question: What is the 440G-TZS21UPRH used for?
Date Update:16/06/2025
Answer:

The 440G-TZS21UPRH is a tongue-actuated guard locking safety interlock switch, designed to ensure machine guards remain locked until a safe condition is met (e.g., the machine has come to a complete stop). It prevents access to hazardous areas, complying with machine safety regulations like ISO 13849-1 and IEC 62061.

Question: How does the 440G-TZS21UPRH work?
Date Update:16/06/2025
Answer:

The switch uses a mechanical actuator (key) that inserts into the switch when the guard is closed. When energized:

  • The solenoid locks the actuator, preventing access
  • The system confirms the guard is closed and locked
  • After safe conditions are met, the solenoid is de-energized to allow unlocking
Question: What are the key electrical specifications of the 440G-TZS21UPRH?
Date Update:16/06/2025
Answer:
  • Solenoid voltage: Usually 24V DC
  • Contacts: 1NO (normally open) + 1NC (normally closed)
  • Safety level:
    Category 4 / PLe per ISO 13849-1
    SIL 3 per IEC 62061
  • Switching current: Typically up to 2A

Check the datasheet for wiring limitations and electrical lifespan.

Question: What are the wiring terminals and connection options of the 440G-TZS21UPRH?
Date Update:16/06/2025
Answer:
  • Pre-wired cable or M12 connector
  • Terminal blocks inside plastic enclosure (if panel-mount)
  • Wires for:
    Solenoid control
    Monitoring circuits (NC/NO)
    Auxiliary output (optional)

Use dual-channel wiring for PLe-rated systems. Follow color coding and control logic standards.

Question: Where should the 440G-TZS21UPRH be mounted?
Date Update:16/06/2025
Answer:

Mount the switch body to the fixed guard frame and the actuator (tongue/key) to the movable guard/door. Ensure:

  • Proper alignment of actuator
  • Firm mounting (no excessive vibration)
  • Right-hand entry model is aligned with door swing

Incorrect alignment may lead to fault codes or actuator misdetection.

IQElectro is not an authorized distributor.
IQElectro LLC (IQElectro) is NOT an Authorized Distributor or in any way affiliated with Rockwell Automation, Siemens, or any other Manufacturers. IQElectro is NOT an Authorized Dealer of this product. The product may be of older version, date codes, or design than that available from authorized dealers. As IQElectro is not an authorized dealer of this product, the Original Manufacturer's Warranty and Support DO NOT apply. IQElectro sells SURPLUS only and DOES NOT SELL SOFTWARE or FIRMWARE licenses For more detailed information, please refer to the full version of our disclaimer policy Disclaimer Policy.
Description / Specifications

Description

The Allen-Bradley 440G-TZS21UPRH is a TLS-Z GD2 Guard Locking Safety Switch designed for high-integrity machine guarding applications. Operating on 24V AC/DC, this power-to-release safety interlock provides secure guard locking with 2000 N (450 lb) holding force, ensuring that access doors remain locked until hazardous motion has stopped. Equipped with solid-state safety outputs and an 8-pin M12 quick-disconnect, it offers robust performance and simplified wiring for modern industrial safety systems.

 

 

Technical Specifications

Condition New / Never Used Surplus
Brand Allen-Bradley
Series / Family 440G TLS-Z GD2
Part Number 440G-TZS21UPRH
Product Type Guard Locking Safety Switch
Model Type Power to Release
Actuator Type Fully-Flex
Safety Contacts 2 N.C. PNP (0.2A max)
Auxiliary Contacts 1 N.O. PNP (0.2A max) – Lock Status
Solenoid Voltage 24V AC/DC
Holding Force 2000 N (450 lbs)
Connection Type 8-Pin M12 (Micro)
Terminal Type Plug-In QD
Housing Material Plastic
Enclosure Rating IP66, IP67
Standards / Approvals C-TICK, CCC, KC
Mounting Panel / Guard Door
Solenoid Contacts None (solid-state outputs only)

  

 

Information About 440G-TZS21UPRH

The Allen-Bradley 440G-TZS21UPRH is part of the Guardmaster TLS-Z GD2 family, engineered for reliable access-guard locking on machinery where hazardous motion must be fully stopped before entry is allowed. As a Power-to-Release model, the solenoid remains energized to unlock the guard, ensuring fail-safe operation in the event of a power loss. With 2 N.C. PNP safety outputs and 1 N.O. PNP auxiliary output, this switch provides advanced, solid-state signaling for safety relays, safety controllers, and PLCs. The auxiliary output delivers real-time lock status feedback to improve diagnostics and minimize downtime. The switch supports a fully-flex actuator, accommodating misalignment or vibration at the guard door—common in industrial environments. Rated IP66 and IP67, the TLS-Z GD2 withstands washdown, dust, and harsh conditions. The plastic housing provides corrosion resistance and long service life.

Key Features:

  • Power-to-Release guard locking safety switch
  • Fully-flex actuator compatibility for misaligned doors
  • 24V AC/DC solenoid operation
  • 2 N.C. PNP solid-state safety outputs
  • 1 N.O. PNP auxiliary lock status output
  • Heavy-duty 2000 N (450 lb) holding force
  • 8-pin M12 quick-disconnect connection
  • Plastic, corrosion-resistant housing
  • High environmental protection: IP66, IP67
  • Ideal for guard doors, hatches, and machine access panels
  • Suitable for Category 4 / PL e / SIL 3 system architectures (when used with appropriate safety controller)

The M12 8-pin quick-disconnect reduces wiring time and simplifies replacement. With a 2000 N holding force and compliance with global safety standards, the 440G-TZS21UPRH is ideal for OEMs, integrators, and safety upgrades requiring reliable guard locking.

Check Out These Related Products