- Bad communication ports
- Broken selector/key switches
- Dead batteries/Bad Battery connections
- Solid or Blinking RED OK Status Light
- Solid or Blinking RED RUN Status Light
- Solid or Blinking RED Fault Status Light
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Allen Bradley Guardmaster Safety Relays Repair
We offer extensive repairs for your Guardmaster Safety Relays. We keep many spare parts in stock so that we can repair your Guardmaster Safety Relays as efficiently and effectively as possible. Our standard repair lead time is 3-5 days. However, we can often repair your unit much faster if necessary. We can repair most issues and if for some reason we cannot repair your unit we will do our best to offer a refurbished unit at the repair cost, so that you can get a working unit back as soon as possible!
- 2 Year DO Supply Warranty
- Fast repairs at low costs
- No surprises or up-charges for difficult repairs
- Standard lead time of 2-4 weeks
- Extensive quality control and testing
Get a repair quote
Not an Authorized Distributor: DO Supply is not an authorized distributor for listed manufacturers or tradenames and therefore the manufacturer's
warranty does not apply. All of our products come with DO Supply's 2-year warranty.
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Hardware issues & error codes we repair
We repair all of the following hardware issues and error codes with your Guardmaster Safety Relays parts.
- Bad analog inputs or ouptus
- Bad digital input or outputs
- Bad relays (stuck on/off)
- Incorrect voltages on inputs or outputs
- Incorrect current on inputs or outputs
- DF1, DH-485, DH+, Profibus, Remote I/ (RIO) failures and more!
- Intermittent communication
- Solid RED/Blinkging RED communication lights
- Devicenet, Ethernet, ControlNet, RS232 ports.
- Missing CJC Jumpers
- Incorrect readings
- Failed inputs
- Dead power supplies
- Incorrect voltage
- Broken Plastic
- Poor Connections
- Bad Slots
Browse Guardmaster Safety Relays Repairs
Browse our catalog of repairable Guardmaster Safety Relays parts to get a quote.
440T-MRKSE110E
This rotary interlock switch features a contact configuration comprising 2 Normally Open (NO) and 2 Normally Closed (NC) contacts, alongside an additional NC auxiliary contact. It is developed for enc
Available
440T-MRKSE11DA
This rotary key switch is designed for enclosure mounting and is constructed from durable die-cast zinc and plastic. Rated for 240 V AC, it allows for a current capacity of up to 20 A. The device is e
In Stock Ships Today
440T-MRKSE11DD
This rotary key switch supports a frequency rating of 50/60 Hz and accommodates surface or enclosure mounting options. With a contact rating of 10 horsepower at 600 V, this device effectively handles
In Stock Ships Today
440T-MRKSE11MB
This rotary key switch employs a single key mechanism and includes a rotary actuator. It is configured with 2 normally open (NO) and 2 normally closed (NC) contacts, rated for a maximum current of 20
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440T-MRPSE110K
This panel-mounted rotary switch includes a contact configuration of 2 normally open (NO) and 2 normally closed (NC) contacts. It has a rated current of 20 A and is protected with an IP40 enclosure ra
Available
440T-MSALE10BB
This interlock consists of a single key type and supports standard key code labeling. It allows for the safe operation of a single access or chain lock mechanism, where the key must be trapped to rele
Available
440T-MSBLE130A
Operating efficiently within a temperature range of 0 to 40 degrees Celsius, this trapped key interlock ensures reliable performance. It features a bolt mechanism that can extend 27 mm and retract 13
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440T-MSBLE130B
This component is manufactured with a combination of stainless steel and die-cast zinc for durability. The bolt mechanism allows for a projection of 27 mm when extended and retracts 12 mm for secure l
In Stock Ships Today
440T-MSBLE13DE
This trapped key interlock features a bolt diameter of 15 mm, with a retracted position at 12 mm and an extended position of 27 mm. Made from 316L marine-grade stainless steel, it ensures durability i
In Stock Ships Today
440T-MSRUE11BI
Designed for panel or surface mounting, this solenoid release unit has a robust construction combining plastic and metal materials. The unit is rated at IP20 for protection, and its DC solenoid coil a
In Stock Ships Today
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