- 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.
440G-T21BNPT-1B
This guard locking switch includes a break-before-make contact type and contains 2 normally closed safety contacts along with 1 normally open auxiliary contact. It is constructed from plastic and has
In Stock Ships Today
440G-T27127
This Guardlock Switch operates at 24VAC/DC and features two N.C. safety contacts and one N.O. auxiliary contact. The holding force is rated at 2000 N, and the unit has a mechanical life expectancy of
In Stock Ships Today
440G-T27134
This interlock switch comes equipped with 2 normally closed safety contacts and 1 normally open auxiliary contact. The maximum holding force is 2000 N, supported by a power-to-release locking mechanis
In Stock Ships Today
440G-T27177
This Guardlock Switch includes one normally open (N.O.) auxiliary contact and two normally closed (N.C.) safety contacts. It provides a holding force capability of 2000 N and features a thermal curren
In Stock Ships Today
440G-T27178
This device is composed of plastic material and includes a GD2 standard actuator type for reliable operation. The solenoid voltage rating is set at 100 VAC/DC, and the switch uses a break before make
In Stock Ships Tomorrow
440G-T27195
This guard locking switch contains two normally closed safety contacts and one normally open auxiliary contact. Its structure incorporates a stainless steel actuator and a glass-filled PBT housing, en
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440G-T27240
This guard locking switch features a configuration of 2 Normally Closed (N.C.) and 1 Normally Open (N.O.) safety contacts along with solenoid contacts comprising 1 N.C. and 1 N.O. With its IP66, IP67,
In Stock Ships Tomorrow
440G-T27241
This Guardlock switch operates in a temperature range of -20°C to 55°C and is capable of being stored in environments with temperatures from -25°C to 75°C. The device accommodates 5% to 95% relative h
In Stock Ships Tomorrow
440G-T27258
This guard locking switch includes two normally closed safety contacts and one normally open contact. It utilizes an M20 conduit connection type and features a fully-flex actuator. It is constructed f
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440G-T27260
With a rated voltage of 24 V AC and DC, this guard locking switch includes two normally closed safety contacts and one normally open auxiliary contact. Rated to IP67 and IP69K, it withstands water and
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