Accessibility Links

Skip to main contentAccessibility help
Accessibility feedback
Press / to jump to the search box
Choose what you’re giving feedback on
  • Delete

  • See more
  • Delete

  • See more
  • Report inappropriate predictions
    Quick Settings
    Sign in

    Filters and Topics

    AI Mode
    All
    Shopping
    Images
    Videos
    Short videos
    Forums
    More
    Maps
    News
    Web
    Books
    Tools
    Any time
    Any time
    Past hour
    Past 24 hours
    Past week
    Past month
    Past year
    Custom range...
    Custom date range
    Go
    All results
    All results
    Verbatim
    Advanced Search
    About 411 results (0.32s) 
    Ctrl+Shift+X to select

    Refine results

    • Category
      • Electrical Relays
      • Electrical Disconnects & ...
      • Switches, Dimmers & Controls
      • Plumbing Valves
    • Stores
      • AutoZone
      • eBay
      • DigiKey
      • FinditParts.com
      See more
    • Color
      • Pink
      • Red
      • Blue
      • Green
      See more
    • Price
      • Under $150
      • $150 - $500
      • $500 - $1,500
      • Over $1,500
      • $
        Please provide a valid price.
        $
        Please provide a valid price.
    • Sort by
      • Price: low to high
      • Price: high to low
    • Switch Use
      • Limit Switch
      • Pressure Switch
    • Free shipping
      • Free shipping
    • Brand
      • Allen-Bradley
      • Honeywell
      • Mitsubishi
      • John Deere
      See more
    Failed to load more results. Please try again later.
    Replacement
    Electrical Relays
    On sale
    Price
    For Sale
    AutoZone
    Pink
    Location
    New
    Used
    Red
    Electrical Disconnects & ...
    Switches, Dimmers & Controls
    Buy
    Reviews
    Plumbing Valves
    eBay
    Blue
    Green
    Male
    Gray
    DigiKey
    Under $150
    Limit Switch
    FinditParts.com
    Small business

    Search Results

    Including results for AB 440G-T27121 Relay Switch
    Search only for AB 4440G-T27121 Relay Switch

    AI Overview

    An AI Overview is not available for this searchCan't generate an AI overview right now. Try again later.
    AI Overview
    The
    Allen-Bradley 440G-T27121 (McNaughton-McKay is a TLS-GD2 Guardmaster safety interlock switch designed for securing industrial machinery. It features power-to-release functionality, 24V AC/DC solenoid voltage, 2NC/1NO safety/auxiliary contacts, and M20 conduit entry, ensuring high-level safety locking (PLe/SIL3). 
    Key Features and Specifications: 
    • Model: 440G-T27121 (TLS-GD2)
    • Function: Power to release (solenoid energized to unlock)
    • Voltage: 24V AC/DC
    • Contacts: 2 Normally Closed (NC) safety contacts, 1 Normally Open (NO) auxiliary contact
    • Locking Mechanism: Guard locking switch
    • Actuator: Not included (requires separate purchase)
    • Material: Plastic, red body
    • Rating: IP67 
    Common Applications:
    This device is commonly used for machinery that does not stop immediately, such as rotating equipment, ensuring the gate remains locked until hazardous motion ceases. It is designed for use in safety-critical systems. 
    • Allen-Bradley, 440G-T27121, Guard Locking Switch
      Allen-Bradley, 440G-T27121, Guard Locking Switch - 440G TLS-GD2: Solenoid Voltage: 24V AC/DC, Contacts(Safety and Aux): 2 Normally...
      State Electric Supply Company
    • Allen-Bradley 440G-T27121 - McNaughton-McKay
      Guardlock Switch,TLS GD2,Power To Release,24V ACDC,1 N.C. 1 N.O.,2 N.C. Safety, 1 N.O Aux,2 N.C. Safety Contacts,Break Before Make...
      McNaughton-McKay
    • 440G TLS-GD2 | Rockwell Automation | UK
      Functional Safety Data (related to Safety Contacts) * B10d: > 2 x 106 operations at minimum load. * PFHD: < 3 x10-7 * MTTFd: > 385...
      Rockwell Automation
    • 440G-T27121 | Allen-Bradley | US - Rockwell Automation
      Guard Locking Switch - 440G TLS-GD2: TLS-3 GD2 Power to Release, Solenoid Voltage: 24V AC/DC, Solenoid Contacts: 2 Normally Closed...
      Rockwell Automation
    • 440G-T27121 Allen Bradley Guardmaster - Safety switch: bolting
      Allen Bradley Guardmaster 440G-T27121 | Safety switch: bolting; TLS1-GD2; NC x2; IP67; plastic; red; 24VDC - This product is avail...
      TME
    • 440G-T27121 Allen Bradley – DDPARTS SOLUTION
      Dec 21, 2025 — Product details * Product Description: * The 440G-T27121 is a premium Guardmaster Safety Interlock Switch from Allen B...
      ddparts solution
    • Cut Sheet 440G-T27121
      440G Guard Locking Switches. 440G-T27121. Representative Rendering, Not The Actual Product. Guard Locking Switch - 440G TLS-GD2: T...
      Rockwell Automation
    • 440G-T27121 | Allen Bradley 440G-T Series Solenoid Interlock Switch, Power to Unlock, 24V ac/dc | RS
      This cost-effective switch is perfect for use with machines which do not stop instantly, or which may be damaged by interference w...
      RS Components
    • 440G-T27134 | Allen Bradley 440G-T Series Solenoid Interlock Switch, Power to Unlock, 24V ac/dc | RS
      This safety switch is perfectly suited for use with machinery which does not come to an immediate stop. The 440G-T27134 Power-to-U...
      Radionics
    • Safety Switches Specifications
      Guard locking switches are used to protect an area when a danger is not immediately removed after a stop request, as in the case o...
      docs.rs-online.com
    • Allen-Bradley, 440G-T27121, Guard Locking Switch
      Allen-Bradley, 440G-T27121, Guard Locking Switch - 440G TLS-GD2: Solenoid Voltage: 24V AC/DC, Contacts(Safety and Aux): 2 Normally...
      State Electric Supply Company
    • Allen-Bradley 440G-T27121 - McNaughton-McKay
      Guardlock Switch,TLS GD2,Power To Release,24V ACDC,1 N.C. 1 N.O.,2 N.C. Safety, 1 N.O Aux,2 N.C. Safety Contacts,Break Before Make...
      McNaughton-McKay
    • 440G TLS-GD2 | Rockwell Automation | UK
      Functional Safety Data (related to Safety Contacts) * B10d: > 2 x 106 operations at minimum load. * PFHD: < 3 x10-7 * MTTFd: > 385...
      Rockwell Automation
    Show all
    Dive deeper in AI Mode
    AI responses may include mistakes. Learn more
    Positive feedback
    Negative feedback
    Thank you
    Your feedback helps Google improve. See our Privacy Policy.
    Share more feedbackReport a problemClose
    Thank you
    Your feedback helps Google improve. See our Privacy Policy.
    Share more feedbackReport a problemClose
    Thank you
    Your feedback helps Google improve. See our Privacy Policy.
    Share more feedbackReport a problemClose
    Show more
    Explain this
    Related images
    Copy text
    Access this menu with Ctrl+Shift+X
    My Ad Center

    440G-T27121 | Allen-Bradley | US


    Rockwell Automation
    https://www.rockwellautomation.com › ... › Products
    Rockwell Automation
    https://www.rockwellautomation.com › ... › Products
    Guard Locking Switch - 440G TLS-GD2: TLS-3 GD2 Power to Release with Escape Release, Solenoid Voltage: 110V AC/DC, Solenoid Contacts: 2 Normally Closed, ...Read more
    AB 4440G-T27121 Relay Switch from www.rockwellautomation.com
    Missing: 4440G- ‎| Show results with: 4440G-
    Popular products
    • LOW PRICE
      Allen-Bradley Guard Master Tls1-Gd2 Safety Interlock Switch. Low price.
      Allen-Bradley Guard Master Tls1-Gd2 Safety Interlock Switch
      $123.00Usually $162
      eBay
       & more
      4.7(3)
      LOW PRICE
      Allen-Bradley Guard Master Tls1-Gd2 Safety Interlock Switch
      $123.00Usually $162
      eBay
       & more
      4.7(3)
    • Allen Bradley Guardmaster Solenoid Interlock Switch.
      Allen Bradley Guardmaster Solenoid Interlock Switch
      $231.89
      eBay - top1industrial
       & more
      Free delivery
      Allen Bradley Guardmaster Solenoid Interlock Switch
      $231.89
      eBay - top1industrial
       & more
      Free delivery
    • 440G-T27121 (B) Allen Bradley.
      440G-T27121 (B) Allen Bradley
      $630.67
      Novaut Marketplace Industrial
      440G-T27121 (B) Allen Bradley
      $630.67
      Novaut Marketplace Industrial
    • 440g-t27121 Guardmaster Switch 24v Ac/dc 440gt27121 Allen-bradley.
      440g-t27121 Guardmaster Switch 24v Ac/dc 440gt27121 Allen-bradley
      $230.00
      eBay - top1industrial
      Free delivery
      440g-t27121 Guardmaster Switch 24v Ac/dc 440gt27121 Allen-bradley
      $230.00
      eBay - top1industrial
      Free delivery
    • Allen Bradley 440g-t27121 Guardlock Switch Power To Release 440gt27121.
      Allen Bradley 440g-t27121 Guardlock Switch Power To Release 440gt27121
      $214.99
      eBay - bestmall-99
      Free delivery
      Allen Bradley 440g-t27121 Guardlock Switch Power To Release 440gt27121
      $214.99
      eBay - bestmall-99
      Free delivery
    • 5% OFF
      In Box Allen Bradley 440g-t27121 Ser/e Guard Locking Switch 24vdc. 5% OFF.
      In Box Allen Bradley 440g-t27121 Ser/e Guard Locking Switch 24vdc
      $284.99$300
      eBay - plcsauto
      5% OFF
      In Box Allen Bradley 440g-t27121 Ser/e Guard Locking Switch 24vdc
      $284.99$300
      eBay - plcsauto
    • Allen Bradley 440g-t27121 Tls-gd2 Power To Release 24v Acdc Guardlock.
      Allen Bradley 440g-t27121 Tls-gd2 Power To Release 24v Acdc Guardlock
      $179.00
      eBay - edgesupply2024
      Free delivery
      Allen Bradley 440g-t27121 Tls-gd2 Power To Release 24v Acdc Guardlock
      $179.00
      eBay - edgesupply2024
      Free delivery
    • Allen-bradley Guardmaster Tls1-gd2 440g-t27121 Safety Interlock Switch.
      Allen-bradley Guardmaster Tls1-gd2 440g-t27121 Safety Interlock Switch
      $371.40
      eBay - hmi-parts
      Free delivery
      Allen-bradley Guardmaster Tls1-gd2 440g-t27121 Safety Interlock Switch
      $371.40
      eBay - hmi-parts
      Free delivery
    • 8% OFF
      1PCS NEW Safety Switch 440G-T27121 440G-T27121. 8% OFF.
      1PCS NEW Safety Switch 440G-T27121 440G-T27121
      $292.56$318
      eBay - plccentre
      8% OFF
      1PCS NEW Safety Switch 440G-T27121 440G-T27121
      $292.56$318
      eBay - plccentre
    • NEW ORIGINAL MODULE 440G-T27121.
      NEW ORIGINAL MODULE 440G-T27121
      $604.00
      eBay - babushkinis
      Free delivery
      NEW ORIGINAL MODULE 440G-T27121
      $604.00
      eBay - babushkinis
      Free delivery
    More products
    • 440G-T27121.
      440G-T27121
      $349.49
      leadtime.ca
      440G-T27121
      $349.49
      leadtime.ca
    • 9% OFF
      1pcs Ab Safety Door Switch Tls1-gd2 440g-t27121 In Box. 9% OFF.
      1pcs Ab Safety Door Switch Tls1-gd2 440g-t27121 In Box
      $705.42$775
      eBay - onlyautomation
      Free delivery
      9% OFF
      1pcs Ab Safety Door Switch Tls1-gd2 440g-t27121 In Box
      $705.42$775
      eBay - onlyautomation
      Free delivery
    • 1pcs/lot RTT7121 12V 40A Car Relay 4 Pins.
      1pcs/lot RTT7121 12V 40A Car Relay 4 Pins
      $5.28
      eBay - richde38
      1pcs/lot RTT7121 12V 40A Car Relay 4 Pins
      $5.28
      eBay - richde38
    • 1pcs Rtt7121 12v 40a Car High Power Relay 4 Pins.
      1pcs Rtt7121 12v 40a Car High Power Relay 4 Pins
      $8.22
      eBay - rich_0430
      1pcs Rtt7121 12v 40a Car High Power Relay 4 Pins
      $8.22
      eBay - rich_0430
    • 1pc Rtt7121 Car High Power Relay 4pins 12v 40a.
      1pc Rtt7121 Car High Power Relay 4pins 12v 40a
      $10.45
      eBay - virtueglow
      1pc Rtt7121 Car High Power Relay 4pins 12v 40a
      $10.45
      eBay - virtueglow

    Allen-Bradley 440G-T27121 TLS-GD2 Soloenoid Voltage ...


    Crawford Electric Supply
    https://www.crawfordelectricsupply.com › detail
    Crawford Electric Supply
    https://www.crawfordelectricsupply.com › detail
    Allen-Bradley 440G-T27121 TLS-GD2 Soloenoid Voltage 24 Volt AC/DC Contacts Guard Locking Switch ; Applications. For Safety Function ; Connection Type. M20 Conduit.Read more
    Missing: 4440G- ‎| Show results with: 4440G-

    440G-T27121 Allen Bradley Guardmaster - Safety switch


    TME
    https://www.tme.com › ... › Standard Safety Switches
    TME
    https://www.tme.com › ... › Standard Safety Switches
    440G-T27121Allen Bradley Guardmaster-Safety switch bolting ; Body material. plastic ; Colour. red ; Contacts electrical parameters. 250V AC / 2A ; Mechanical ...Read more
    AB 4440G-T27121 Relay Switch from www.tme.com
    $357.59 · In stock · $12.90 delivery
    Missing: 4440G- ‎| Show results with: 4440G-

    1 PCS NEW TLS1-GD2 440G-T27121 24V AC/D AB safety ...


    eBay
    https://www.ebay.com › ... › PLC Processors
    eBay
    https://www.ebay.com › ... › PLC Processors
    L'objet correspond exactement à la description.Bonne information du vendeur,je suis très satisfait. 1 PCS NEW JV1APF-24V Panasonic AJV5242 4-pin 16A relay ...Read more
    $650.44 · In stock · Free delivery
    Missing: 4440G- ‎| Show results with: 4440G-

    440G-T27121 Allen Bradley


    ddparts solution
    https://ddpartssolution.com › products › 440g-t27121-a...
    ddparts solution
    https://ddpartssolution.com › products › 440g-t27121-a...
    The 440G-T27121 is a premium Guardmaster Safety Interlock Switch from Allen Bradley, designed to provide reliable machine guarding for industrial automation ...Read more
    AB 4440G-T27121 Relay Switch from ddpartssolution.com
    $372.00 · In stock · 4.7 (3) · Free delivery · 30-day returns
    Missing: 4440G- ‎| Show results with: 4440G-

    Wholesale AB 4440G-T27121 Relay Switch, High Quality AB 4440G ...


    henengindustry.com
    https://www.henengindustry.com › ab-4440g-t27121-rel...
    henengindustry.com
    https://www.henengindustry.com › ab-4440g-t27121-rel...
    Wholesale our AB 4440G-T27121 Relay Switch with factory price. we are leading AB 4440G-T27121 Relay Switch supplier in China, good after-sales service.

    Allen-Bradley 440G-T27121


    McNaughton-McKay
    https://www.mc-mc.com › Product
    McNaughton-McKay
    https://www.mc-mc.com › Product
    Guardlock Switch,TLS GD2,Power To Release,24V ACDC,1 NC 1 NO,2 NC Safety, 1 NO Aux,2 NC Safety Contacts,Break Before Make,1 NO Auxillary Contact,No Actuator.Read more
    Missing: Relay ‎| Show results with: Relay

    Allen-Bradley 440G-T27121


    The Reynolds Company
    https://www.reynoldsonline.com › Product
    The Reynolds Company
    https://www.reynoldsonline.com › Product
    Guardlock Switch,TLS GD2,Power To Release,24V ACDC,1 NC 1 NO,2 NC Safety, 1 NO Aux,2 NC Safety Contacts,Break Before Make,1 NO Auxillary Contact,No Actuator.Read more
    Missing: Relay ‎| Show results with: Relay

    Safety Switches Specifications - Literature Library


    Rockwell Automation
    https://literature.rockwellautomation.com › groups
    Rockwell Automation
    https://literature.rockwellautomation.com › groups
    PDF
    The 440G-MZ guard locking switches have the following features: • Certified to SIL 3, PLe, Cat 4 for door position monitoring and guard locking.Read more

    Allen-Bradley, 440G-T27121, Guard Locking Switch


    State Electric Supply Company
    https://www.stateelectric.com › products
    State Electric Supply Company
    https://www.stateelectric.com › products
    Allen-Bradley, 440G-T27121, Guard Locking Switch - 440G TLS-GD2: Solenoid Voltage: 24V AC/DC, Contacts(Safety and Aux): 2 Normally Closed, 1 Normally Open.Read more
    $408.75 · 6–10 day delivery
    Missing: Relay ‎| Show results with: Relay

    Ads

    People also search for
    Ab 4440g t27121 relay switch replacement
    Ab 4440g t27121 relay switch manual

    Page Navigation

    1234Next

    Footer Links

    Prince William County, Virginia
     - Based on your past activity
     - 
    Update location
    Can't update your location
    Learn more
    Updating location...
    HelpSend feedbackPrivacyTerms
    AI overview is ready
    Google apps