DOLD SAFEMASTER STS Power Interlocking ZRH01SLP6 Review: Specs, Price and Applications
SAFEMASTER STS Power Interlocking integrates a switch-disconnector into a key-transfer and guard-access sequence. DOLD identifies ZRH01SLP6 as a stainless-steel load-isolator interlocking configuration that locks the switch drive shaft in the switched-off position. The intended sequence requires the main switch to be off before entry and prevents reclosure while access is authorized.
Quick Verdict
Consider Power Interlocking when guard access must be tied to physical switching off of a compatible energy supply. It provides a different function from a drive STO command or a simple guard-position switch. Match the isolator, shaft coupling, key sequence and remaining energy sources as a complete installation.
DOLD SAFEMASTER STS Power Interlocking ZRH01SLP6 at a Glance
Specification | Details |
Example configuration | ZRH01SLP6 |
Function | Switch-disconnector interlock in OFF position |
Mechanical action | Locks the drive shaft in a defined position |
Construction | Stainless steel in identified configuration |
Architecture | SAFEMASTER STS key-transfer / access system |
Supply-failure behavior | Mechanical locking described as retained on auxiliary/control-circuit failure |
Power switching ratings | Determined by the selected compatible switch-disconnector, not the interlock name |
Design and Engineering Assessment
Locking a disconnect shaft is meaningful only when its position reliably corresponds to the actual switch state. Verify the approved mechanical coupling, mounting and compatibility. The interlock’s stainless construction does not establish the connected switch’s breaking capacity, pole arrangement or suitability for a particular supply.
Electrical disconnection is one energy boundary. A machine can still contain charged DC links, pneumatic pressure, hydraulic accumulators, hot processes or gravity hazards. The access procedure must establish the required safe condition for these sources and specify any discharge time, blocking or verification.
Compared with control-level torque removal, a suitable switch-disconnector serves an isolation function. Neither approach should be casually substituted for the other. Select stopping, isolation and restart prevention from the actual machine requirement, and validate the complete sequence.
Select the Switch and Key Sequence Together
Specify the switch-disconnector identity, electrical duty, mounting, shaft interface and STS configuration. Confirm how turning OFF releases access authorization and how retained keys prevent reclosure.
Document every additional energy source and all access points. Check the approved arrangement’s behavior on auxiliary-power loss; do not infer that it solves unrelated stored-energy hazards.
Inspect and Restore
Validate the installed OFF-state interlock, key transfer, guarded entry and controlled restoration under the approved machine procedure. Include foreseeable mechanical misalignment and the required inspections.
Keep the accepted isolator, shaft arrangement, key plan and full assembly drawing with spare-part records. An unapproved switch or shaft substitute can undermine the state relationship on which the access sequence depends.
Applications and Selection
Guarded industrial machinery requiring a documented switch-disconnector isolation and key-transfer entry sequence.
For DOLD SAFEMASTER STS Power Interlocking ZRH01SLP6, 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
Request a quote for the exact ordering code, supply, contact arrangement, accessories and integration scope. Confirm the applicable instructions and documentation with the delivered configuration.
Compare complete installed alternatives using the same required protective function, diagnostic coverage, service procedure and acceptance criteria. Hardware cost alone does not represent the engineering and validation effort.
Pros and Cons
Advantages
Links access permission to a switch-disconnector OFF state
Mechanical interlocking can persist through control-power failure
Stainless identified configuration within STS architecture
Limitations
Requires exact switch and shaft compatibility
Does not dissipate every stored-energy source
Complete access and restart sequence still needs validation
Who Should Consider DOLD SAFEMASTER STS Power Interlocking ZRH01SLP6?
Consider this configuration when guarded industrial machinery requiring a documented switch-disconnector isolation and key-transfer entry sequence matches a documented project requirement. Preserve the complete selected identity, interfaces and accepted operating procedure for commissioning and maintenance.
DOLD SAFEMASTER STS Power Interlocking ZRH01SLP6 FAQ
What is locked?
The compatible switch-disconnector drive shaft is locked in the specified switched-off position.
Does ZRH01SLP6 define motor-current capacity?
No. The selected switch-disconnector determines its electrical switching ratings.
Is this the same function as STO?
No. A switch-disconnector isolation arrangement and a drive torque-removal function have different roles.
Does OFF remove every machine hazard?
No. Stored energy, other supplies and gravity hazards must be addressed separately.
What construction is identified?
DOLD lists stainless steel for ZRH01SLP6.
What happens on control-power loss?
DOLD describes secure mechanical locking despite auxiliary/control-circuit failure; validate the complete installed arrangement.
Can any rotary isolator be substituted?
No. Confirm approved switch, shaft and mounting compatibility.
What should a quote specify?
Exact interlock, switch-disconnector, shaft/interface, keys, guarded-access modules and documentation.
Prices are indicative and may change. Confirm the final configuration, commercial terms and delivery schedule before ordering.
