REES 30.5 mm Lockable Emergency-Stop Controls Review: Specs, Price and Applications

REES manufactures 30.5 mm control operators with distinct push-pull, momentary and lockable arrangements. The supplied emergency-stop listing includes configurations intended to prevent unauthorized reset. A lockable control-circuit E-stop is not automatically an energy-isolating device or a substitute for the machine’s complete lockout procedure.
Quick Verdict
Consider a selected REES operator where its mounting, action, contacts and environmental installation fit the specified stop function. Identify the exact operator/contact assembly and its certification scope. Similar red mushroom heads can have different latching, reset and contact behavior.
REES 30.5 mm Lockable Emergency-Stop Controls at a Glance
Specification | Details |
Manufacturer | REES;source supplier Industrial Safety Controls |
Mounting family | 30.5 mm control units |
Operator scope | Selected lockable, push-pull or other documented action |
Contacts | Approved contact-block combination;order separately where specified |
Positive opening | Specified NC/operator combination;not every contact |
Environmental boundary | Correct gasket, enclosure and installation |
Function boundary | Control-circuit emergency stop;not general energy isolation |
Design and Engineering Assessment
The complete stop chain includes the operator, contacts, safety logic, output elements and machine response. A component rating or contact action cannot establish the achieved performance level of the entire function. Validate the actual channels and reset logic.
A padlock feature can prevent a depressed control from being reset, but a control circuit can leave hazardous electrical, pneumatic, hydraulic or gravitational energy present. The machine’s isolation and stored-energy procedure must address those sources independently.
Positive-opening behavior belongs to the specified mechanical/contact combination. Ordinary normally open or momentary configurations should not inherit the characteristics of an emergency-stop arrangement. Contact electrical utilization and wiring must suit the actual circuit rather than the main motor load by default.
Specify the Operator and Stop Chain
Identify mounting hole, head/action, lock provision, contact blocks, electrical utilization and enclosure. Check reset accessibility and the intended operator reach from the machine layout.
Define monitored channels, stop category, reset/restart separation and response to wiring faults. Follow the exact selected operator/contact instructions.
Validate Installation and Reset
Verify secure mounting, contact actuation, latching and deliberate reset under the approved commissioning plan. Check that releasing/resetting the E-stop does not itself restart hazardous motion.
Retain part numbers, contact arrangement, drawings and periodic inspection procedure. A visually similar replacement can change contact sequencing or locking behavior.
Applications and Selection
Industrial machinery requiring a selected control-circuit emergency-stop assembly.
For REES 30.5 mm Lockable Emergency-Stop Controls, define the actual machine duty before selecting an ordering configuration. Include the required operating point, available installation space, environment and control interfaces. The specification table describes the product or family; the surrounding machine determines which of those features matters for the intended job.
Price and Value
Price: Request a quote for the exact configuration. Compare the product, compatible control equipment, required mechanical parts, cabling and commissioning as one installed system. A component price alone does not represent the cost of a working automation axis.
Evaluate an alternative against the same duty and acceptance criteria. Match the continuous operating requirement first, then compare transient capability, feedback, mechanical fit and support. This avoids choosing between superficially similar products whose ratings describe different operating conditions.
Pros and Cons
Advantages
Several industrial operator/contact arrangements
Defined lockable configurations
Documented mounting and installation scope
Limitations
E-stop is not complete energy isolation
Safety performance depends on the full chain
Operator and contacts must be selected together
Who Should Consider REES 30.5 mm Lockable Emergency-Stop Controls?
Consider REES 30.5 mm Lockable Emergency-Stop Controls for industrial machinery requiring a selected control-circuit emergency-stop assembly. Establish the required operating point and installation interfaces before choosing the configuration, and use a representative loaded cycle as the acceptance basis.
REES 30.5 mm Lockable Emergency-Stop Controls FAQ
Is Industrial Safety Controls the manufacturer?
The reviewed control is made by REES;the source identifies a supplier.
Is the 30.5 mm family one identical switch?
No. Operator action, contacts and locking arrangements vary.
Does a padlocked E-stop isolate every energy source?
No. Apply the machine’s actual energy-isolation and stored-energy procedure.
Are all contacts positive opening?
No. Verify the specified NC/operator combination.
Can reset automatically restart the machine?
The complete design must require the appropriate separate restart action.
Does a component certificate certify the machine?
No. Validate the full stop function and installation.
Can the contact block switch any motor directly?
No. Apply the actual electrical utilization rating and circuit design.
What should a spare preserve?
Operator action, lock feature, contacts, mounting, sealing and accepted stop-chain behavior.
Prices are indicative and may change. Confirm the final configuration, commercial terms and delivery schedule before ordering.





