As a supplier and distributor, Indus Megamart focuses on procurement support, availability, and dispatch reliability rather than manufacturing, helping engineering teams source compatible safety components efficiently.
What is Pilz 750134 PNOZ s4 Safety Relay 48–240VAC/DC 3NO 1NC
Pilz 750134 PNOZ s4 Safety Relay 48–240VAC/DC 3NO 1NC is a safety monitoring relay designed to supervise emergency stop circuits, safety gates, and interlocking systems. It processes input signals from safety devices and controls output contacts to ensure machines transition to a safe state when faults or unsafe conditions are detected.
The PNOZ s4 series is widely used where functional safety circuits need consistent monitoring without relying on programmable safety controllers. The 750134 variant operates across a broader voltage range (AC/DC), making it suitable for facilities with mixed or variable control power systems.
It typically integrates with emergency stop buttons, safety switches, and light curtains. The relay logic ensures that faults such as contact welding, wiring errors, or power interruptions do not lead to unsafe machine restarts. This makes it relevant in applications where fail-safe operation is mandatory.
Applications of Pilz 750134 PNOZ s4 Safety Relay 48–240VAC/DC 3NO 1NC
• Conveyorized material transfer systems
Used in logistics or manufacturing conveyors where emergency stops must isolate motion quickly to prevent product damage or personnel injury.
• Packaging and filling machinery
Ensures safe shutdown when access doors or guards are opened during operation in automated packaging lines.
• CNC and machining centers
Monitors safety circuits in machine tools where spindle motion and tool engagement pose operational risks.
• Industrial mixers and rotating equipment
Prevents unintended restart after power interruption, particularly in batch processing plants.
• Automated storage and retrieval systems (ASRS)
Used in warehouse automation to integrate safety zones and restrict access during equipment movement.
• Process plant access control
Applied in chemical or processing plants where interlocked doors must disable operations when opened.
Industries Using Pilz 750134 PNOZ s4 Safety Relay 48–240VAC/DC 3NO 1NC
This relay is typically used across sectors where machine safety compliance is critical:
• Food processing and packaging
• Automotive component manufacturing
• Warehousing and intralogistics
• Pharmaceuticals and cleanroom operations
• Metal fabrication and heavy engineering
• Plastics and extrusion plants
Each industry uses safety relays differently depending on machine architecture, but the core requirement remains consistent—safe interruption of hazardous motion.
Operational Considerations
When integrating the Pilz 750134 PNOZ s4 Safety Relay, the following factors influence performance:
• Voltage compatibility
The wide voltage range allows use across different panels, but proper selection ensures stable coil operation.
• Safety circuit architecture
Must align with required safety levels (depending on machine risk assessment).
• Input device compatibility
Works with emergency stop switches, safety gate switches, and monitoring contacts.
• Environmental conditions
Panel installation should consider temperature, dust, and vibration typical of industrial environments.
• Control panel space
Compact relay design supports dense panel layouts.
Customization Options
As a standard safety relay, this product does not involve physical customization. However, configuration flexibility exists in:
• Wiring logic (single or dual-channel safety circuits)
• Reset configuration (manual/auto reset)
• Integration with expansion modules or safety PLCs
• Panel layout and terminal selection
Indus Megamart supports selection guidance to ensure compatibility within existing systems.
Product Supply & Distribution Capability
Indus Megamart operates as a supplier and distributor of industrial automation components, including Pilz safety relays. The focus is on:
• sourcing authentic products
• managing availability across batches
• supporting bulk and project-based procurement
• coordinating dispatch based on urgency
For company background, refer to the About page:
https://www.indusmegamart.com/about-us
Supply Across India
Indus Megamart supports supply across major industrial regions including:
• Delhi NCR
• Maharashtra (Pune, Mumbai, Nashik)
• Gujarat industrial belt
• Tamil Nadu manufacturing clusters
• Karnataka (Bengaluru region)
Logistics coordination is aligned with project timelines, ensuring delivery to plant locations, EPC contractors, or system integrators.
Export Capability
Export supply may be supported depending on order size and documentation requirements. Buyers outside India typically coordinate for:
• product specifications confirmation
• packing and dispatch timelines
• compliance documentation
Export handling is managed case-by-case to ensure proper documentation alignment.
How to Choose the Right Pilz 750134 PNOZ s4 Safety Relay
Procurement Checklist:
• Confirm supply voltage compatibility (AC/DC range requirement)
• Verify number of safety outputs required (3NO / 1NC suitability)
• Evaluate machine risk category and safety architecture
• Check compatibility with existing safety devices
• Determine reset logic requirements
• Assess panel space and wiring configuration
For deeper evaluation logic, buyers may refer to internal selection frameworks or request guidance.
Comparison Table
Safety relays in the PNOZ range vary based on voltage, output configuration, and application flexibility. A quick comparison:
Feature |
PNOZ s4 (750134) |
PNOZ s4 24VDC Variant |
PNOZ s5 |
|
Voltage Range |
48–240 VAC/DC |
24 VDC |
Typically 24 VDC |
|
Output Contacts |
3NO + 1NC |
3NO + 1NC |
Different timed outputs |
|
Application |
General safety |
Standard DC systems |
Time-delayed safety |
|
Use Case |
Mixed voltage panels |
DC control panels |
Controlled stop applications |
Typical Use Case Scenarios
• Retrofit of older machinery
Facilities upgrading safety systems without redesigning control panels often choose wide-voltage relays like this.
• Multi-machine production lines
Where different machines operate on varied control voltages, a flexible relay simplifies inventory.
• EPC project installations
Project contractors prefer universal voltage relays to reduce procurement complexity.
• Maintenance replacement scenarios
When replacing failed relays in legacy systems, broader voltage compatibility reduces mismatch risk.
Procurement Process
To procure the Pilz 750134 PNOZ s4 Safety Relay:
- Share requirement details (application, voltage, quantity)
- Confirm compatibility with existing systems
- Request quotation via the contact page:
https://www.indusmegamart.com/contact-us - Finalize delivery timelines and dispatch location
Indus Megamart supports both single-unit and bulk procurement.
Common Buyer Concerns Before Ordering
• Compatibility with existing wiring and safety circuits
• Availability for urgent replacement needs
• Authenticity and sourcing reliability
• Lead time for bulk quantities
• Suitability for specific machine safety categories
Addressing these early helps avoid commissioning delays.
FAQs
What is the main function of Pilz 750134 PNOZ s4 Safety Relay?
It monitors safety inputs such as emergency stop buttons or safety gates and ensures that machines shut down safely when a fault or unsafe condition occurs. It also prevents unintended restart, which is critical in industrial environments with moving machinery.
Can this relay be used in both AC and DC control panels?
Yes, the relay is designed for a wide input voltage range, making it suitable for both AC and DC systems. However, the exact application should be verified based on the control panel design and stability requirements.
How is this different from a safety PLC?
A safety relay performs fixed logic safety functions, while a safety PLC allows programmable safety logic. Relays like the PNOZ s4 are preferred for simpler applications where fixed, reliable safety monitoring is sufficient.
Is this relay suitable for emergency stop applications?
Yes, it is commonly used for emergency stop circuits, ensuring that hazardous motion is stopped immediately and safely when triggered.
What should be checked before replacing an existing relay?
Check voltage compatibility, contact configuration, wiring logic, and mounting type. Even if models look similar, mismatches can lead to improper functioning.
Does this relay support manual reset functionality?
Depending on the wiring configuration, the relay can be set up for manual or automatic reset. This is determined during installation based on safety requirements.
Can it be used in harsh industrial environments?
Yes, when installed inside a properly designed control panel, it can operate reliably in typical industrial conditions involving dust, vibration, and temperature variations.
Is it compatible with safety light curtains?
It can be integrated with safety light curtains provided the input signals match the relay’s requirements. System compatibility should be confirmed during design.
Request a Quote for Pilz 750134 PNOZ s4 Safety Relay 48–240VAC/DC 3NO 1NC
Indus Megamart supplies genuine industrial safety components with procurement support tailored for engineers and buyers.
For pricing, availability, or technical clarification, reach out via:
https://www.indusmegamart.com/contact-us
For enquiries related to:
• pricing and bulk orders
• technical compatibility
• project-based sourcing
Visit: https://www.indusmegamart.com/contact-us
Company overview: https://www.indusmegamart.com/about-us
Exact wiring diagrams and safety category compatibility should be verified during procurement.
Product Specifications
Since project-specific datasheets may vary, the following is a general configuration overview:
Parameter |
Description |
|
Product Type |
Safety relay |
|
Model |
PNOZ s4 (750134 variant) |
|
Supply Voltage |
48–240 VAC/DC |
|
Output Contacts |
3 NO (safety), 1 NC (auxiliary) |
|
Mounting |
DIN rail mounting |
|
Application |
Emergency stop, guard monitoring |
|
Reset Type |
Manual or automatic depending on configuration |
|
Terminal Type |
Typically screw or spring clamp variants |
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