Pilz PNOZ s4 750104 24 V DC Safety Relay in Bokaro

Verify the Exact 750104 Model Before Ordering

For an existing panel or replacement part, verify all identifiers: Pilz, PNOZ s4, 750104, 24 V DC and plug-in screw terminals. The similar PNOZ s4 C, part 751104, has spring-loaded terminals instead of the screw-terminal connection of 750104. It should not be treated as a drop-in substitution without an engineering review.
The 24 V DC figure is the relay's operating supply voltage. Contact switching ratings are separate and depend on the applicable utilisation category, load and manufacturer limits. Do not interpret a listed 240 V contact rating as a 240 V power-supply option for this part.

Technical Specifications

These are product-level identification and selection details, not a wiring guide. Final suitability, safety performance, contact protection, installation and commissioning require the current Pilz operating manual and review by a competent machinery-safety engineer.

Understanding the 3 N/O, 1 N/C and Semiconductor Outputs

The three N/O safety contacts are part of the safety-output arrangement. The one N/C contact is an auxiliary contact, not a fourth safety contact. The additional semiconductor output is another distinct output type and should not be grouped with the relay contacts as though all five connections had identical ratings or purposes.
Pilz's technical data lists separate switching ratings by utilisation category. For example, its AC-1 safety-contact data includes 240 V AC and up to 6 A, while its DC-1 data includes 24 V DC and up to 6 A. Those example limits do not establish a general 6 A rating for every load type. The electrical design must use the specific applicable rating and required protective measures from the official documentation.

Applications and Engineering Selection

Pilz identifies the PNOZ s4 family for monitored emergency stops, safety gates and light-guard devices. In procurement terms, the correct choice depends on the required safety function, input device, wiring architecture, start/reset behaviour, feedback or monitoring needs, contact load, panel dimensions and system validation.
The relay alone does not establish a machine's safety performance level or guarantee a safe stop. Do not select or install a safety relay solely from the contact count. A qualified designer must verify the complete safety function, including the connected devices and actuators, and complete commissioning tests under the applicable requirements.

Screw Terminals, Panel Fit and Related Variants

Part 750104 uses removable screw terminals and has a listed body width of 22.5 mm. Check actual cabinet clearances, DIN-rail mounting arrangement, wire size and terminal style against the Pilz documentation and the existing panel bill of materials.
For similarly named alternatives, verify the full order number. 751104 belongs to the s4 C spring-terminal variant; 750134 is a different supply-voltage variant. Matching the family name or the 3 N/O + 1 N/C wording alone is insufficient for substitution.

Buying Pilz PNOZ s4 750104 in Bokaro

Before ordering, review the Indus MegaMart national product page for the latest seller price, GST, quantity available, payment terms and Bokaro-pincode delivery result. Any displayed stock count or delivery estimate is conditional and should be confirmed for time-sensitive maintenance.
If you are buying for shutdown work, a retrofit or an OEM panel, include the exact part number 750104, quantity, panel requirements, delivery location, GST-invoice needs and any requested manufacturer documentation in the procurement enquiry. Ask for confirmation of the supplied configuration and condition before approving a substitute part number.

Frequently Asked Questions

1. What is Pilz PNOZ s4 part 750104?

It is a 24 V DC standalone PNOZsigma safety relay with three N/O safety contacts, one N/C auxiliary contact and one semiconductor output. Pilz lists it for specified machine-safety monitoring applications.

2. Does 3NO 1NC mean four safety contacts?

No. The official product description distinguishes three N/O safety contacts from one N/C auxiliary contact. The semiconductor output is a separate output type.

3. Is 750104 powered by 24 V AC or 24 V DC?

24 V DC. The power supply is different from the contact switching voltage ratings.

4. What is the difference between 750104 and 751104?

750104 has plug-in screw terminals; 751104 PNOZ s4 C uses plug-in spring-loaded terminals. Confirm compatibility with the panel design before substitution.

5. Can I use this relay in an emergency-stop circuit?

Pilz includes emergency-stop monitoring among the intended application types. Whether it is suitable for a particular circuit depends on the complete safety-function design, wiring, assessment and validation by qualified personnel.

6. Does it support single- and dual-channel monitoring?

Pilz describes single-/dual-channel wiring options with or without cross-short detection, subject to the detailed configuration requirements in the operating manual.

7. Is the relay rated 6 A for every switching load?

No. Specific ratings depend on the utilisation category and contact conditions. Consult Pilz's applicable AC/DC ratings and the correct protective measures before specifying the load.

8. Is this module IP54?

Pilz lists IP40 for the housing. Some retailer summaries use different IP labels without clear separation of installation conditions. Follow the Pilz technical documentation for the exact protection detail.

9. Can an existing 750104 unit be replaced without testing?

No. Even an exact-part replacement in a safety-related circuit calls for appropriate inspection and commissioning or validation under the site's approved maintenance procedure. Do not bypass interlocks or safety devices.

10. How can I confirm stock and delivery in Bokaro?

Check the live Indus MegaMart listing, enter the destination pincode, and obtain seller confirmation for the required quantity and timing, especially for planned machine downtime.

Check the Current Pilz 750104 Offer

View Pilz PNOZ s4 750104 at Indus MegaMart to confirm 24 V DC, 3 N/O + 1 N/C, screw terminals, current price, GST, availability and Bokaro delivery options before checkout or a business quotation.