Allen-Bradley 440R-N23135 Safety Relay,MSR127RP,24V AC/DC,Manual Monitored,Removable,2
$59.99
Out of stock
Request QuoteAllen-Bradley 440R-N23135 — The 440R-N23135 is an Allen-Bradley Guardmaster® MSR127RP Single-function Safety Relay — 24V AC/DC supply, Monitored Manual reset, removable screw terminals. Accepts 1 N.C., 2 N.C. (with cross-fault monitoring), or OSSD inputs; provides 3 N.O. safety-rated outputs + 1 N.C. auxiliary output. Category 4 / PL e per ISO 13849-1, SIL 3 per IEC 61508, Stop Category 0, 15 ms response time. cULus Listed, CE / UKCA marked, TÜV certified.
| Family | Guardmaster MSR127RP Single-function Safety Relay |
| Power Supply | 24V AC/DC |
| Inputs | 1 N.C. / 2 N.C. / OSSD (cross-fault monitoring with 2 N.C.) |
| Safety Outputs | 3 N.O. |
| Auxiliary Output | 1 N.C. |
| Reset Type | Monitored Manual |
| Terminals | Removable (screw) |
| Response Time | 15 ms |
| Safety Rating | Cat 4 PL e / SIL 3, Stop Cat 0 |
PLC Exchange is not an authorized distributor: Original Packaging is synonymous with Used Surplus. See Original Packaging or Warranty for more information.
Description
Allen-Bradley 440R-N23135
The 440R-N23135 is an Allen-Bradley Guardmaster® MSR127RP Single-function Safety Relay — 24V AC/DC supply, Monitored Manual reset, removable screw terminals. Accepts 1 N.C., 2 N.C. (with cross-fault monitoring), or OSSD inputs; provides 3 N.O. safety-rated outputs + 1 N.C. auxiliary output. Category 4 / PL e per ISO 13849-1, SIL 3 per IEC 61508, Stop Category 0, 15 ms response time. cULus Listed, CE / UKCA marked, TÜV certified.
| Safety Relay Overview | |
|---|---|
| Catalog Number | 440R-N23135 |
| Product Family | Guardmaster Bulletin 440R MSR127RP Single-function Safety Relay |
| Reset Configuration | Monitored Manual reset — checks the output monitoring circuit; external feedback required |
| Terminal Type | Removable screw terminals |
| Terminal Blocks (Accessory) | 440R-A23228 (bag of 4, 4-pin spring clamp terminal blocks) — for spring-clamp variant 440R-N23135S |
| Spring-Clamp Variant | 440R-N23135S (same electrical / safety specs) |
| Mounting | 35 mm (1.4 in.) DIN Rail |
| Approximate Dimensions (W × H × D) | 22.5 × 99 × 114.5 mm (0.88 × 3.89 × 4.5 in.) |
| Weight (24V DC) | 210 g (0.46 lb) |
| Enclosure Rating | IP40 (NEMA 1) housing / IP20 at terminals |
| Safety Classification | |
|---|---|
| ISO 13849-1 | Category 4, Performance Level e (PL e) |
| IEC 61508 | SIL 3 |
| IEC 62061 | SIL CL 3 |
| Stop Category | 0 (uncontrolled stop per IEC 60204-1) |
| PFHd | < 1.45 × 10⁻⁹ |
| MTTFd | > 398 years |
| Mission Time / Proof Test Interval | 20 years |
| Functional Test Interval | At least once every 6 months |
| Functional Safety Data Reference | Publication SAFETY-SR001 |
| Inputs | |
|---|---|
| Safety Inputs | 1 N.C. or 2 N.C. or OSSD (Output Signal Switching Device) |
| Input Simultaneity | Infinite (CH2 before CH1) with Auto Reset |
| Input Resistance (Max) | 110 Ω |
| Cross-Fault Detection | Built-in when connected as 2 N.C.; must be performed by OSSD device itself when using OSSD inputs |
| Outputs | |
|---|---|
| Safety Contacts | 3 N.O. — independent + redundant internal contacts supporting the safety function |
| Auxiliary Contact | 1 N.C. — non-safety signal output indicating status of safety outputs |
| Switching Current at Voltage (Min) | 10 mA / 10V |
| External Output Fuse | 6 A slow blow OR 10 A fast acting (with surge suppression) |
| Contact Ratings & Load | |
|---|---|
| Thermal Current Ith (24V AC/DC supply) | 3 × 4 A or 2 × 5 A nonswitching |
| Rated Impulse Withstand Voltage | 2500V |
| AC-1 Resistive | 5 A / 250V AC |
| DC-1 Resistive | 5 A / 24V DC |
| AC-15 Inductive | 5 A / 250V AC |
| DC-13 Inductive | 3 A / 24V DC (5 A / 24V @ 6 ops/min) |
| UL Ratings | B300, R300, 5 A / 250V AC / 24V DC |
| Electrical Life — 250V AC 6 A cos φ=1…0.1 | 1 million operations |
| Electrical Life — 24V DC 2 A | 1 million operations |
| Mechanical Life | 2,000,000 operations |
| Power & Timing | |
|---|---|
| Input Power | 24V AC/DC (also available in 115V AC and 230V AC 50/60 Hz variants) |
| Power Consumption | 2 W |
| Power-On Delay | 1 second |
| Recovery Time | 100 ms |
| Response Time | 15 ms |
| Environmental & Physical | |
|---|---|
| Operating Temperature | -5…+55 °C (23…131 °F) |
| Vibration | 10…55 Hz, 0.35 mm (0.01 in.) |
| Shock | 10 g, 16 ms, 100 shocks |
| Conductor Size (Max) | 0.2…4 mm² (24…12 AWG) |
| Status Indicators | Green LEDs — Power On, CH1 Closed, CH2 Closed |
| Standards | ISO 13849-1, IEC 61508, IEC 62061, IEC 60664-1 |
| Certifications | |
|---|---|
| cULus | Listed |
| CE | Marked for all applicable directives |
| UKCA | Marked for all applicable regulations |
| TÜV | Certified |
PLC Exchange Original Packaging is synonymous with Used Surplus. Because we are not an authorized distributor, we are not legally allowed to claim these items as “New”, “Factory Sealed”, or any other term that may imply such. We have over 10 years of experience working with trusted suppliers to make sure you receive the top-quality hardware you need. Used Surplus items ship in their original packaging, with the same function and contents as OEM-supplied materials. PLC Exchange is an independent supplier of industrial automation products and is not affiliated with the brand manufacturer or any of its authorized distributors. All warranties are provided directly by PLC Exchange. Trademarks, logos, and brand names referenced are property of their respective owners and are used for descriptive identification only.
Disclaimer: PLC Exchange is an independent reseller and is not an authorized distributor, affiliate, licensee, partner, or agent of Allen-Bradley / Rockwell Automation. All product information on this page is compiled from publicly-available manufacturer publications, technical data sheets, and catalog sources, each of which remains the copyright of its originating manufacturer. We make no representation or warranty, express or implied, regarding the accuracy, completeness, timeliness, or fitness for any particular purpose of the specifications or descriptions shown — content may contain errors, omissions, or out-of-date information. Product images are the property of their respective manufacturers, trademark owners, and source publications, and are displayed solely for identification purposes under the nominative fair use doctrine; images are representative and may depict a different configuration or catalog variant than the exact product listed. Purchasers should independently verify specifications against the current manufacturer publication before placing an order. All product names, trademarks, service marks, and registered trademarks are the property of their respective owners, and their use does not imply endorsement or affiliation.
Technical Notes for 440R-N23135
- Refer to the manufacturer's installation instructions for proper mounting, wiring, and configuration.
- Ensure compatibility with your existing system architecture before ordering.
- All 440R-N23135 units sold by PLC Exchange are tested and ship in original factory packaging.
- For application-specific questions or system compatibility verification, contact PLC Exchange technical support at [email protected] or 980-202-0882.
Alternative Part Numbers & Names for 440R-N23135
The 440R-N23135 by Allen-Bradley may also be found under the following alternative names, catalog numbers, or common search variations:
- 440RN23135
- Allen Bradley 440R-N23135
- Allen-Bradley 440R-N23135
- 440R N23135
- 440R/N23135
All variations refer to the same Allen-Bradley product. If you are unsure whether this is the correct part for your application, contact our team for assistance.
Additional information
| Weight | 0.46 lbs |
|---|---|
| Dimensions | 4.5 × 0.9 × 3.9 in |
| warranty | 2.5 Year PLC Exchange Warranty, 30 Days worry-free return from delivery |
| upc | 611320806526 |
| mpn | 440R-N23135 |
| manufacturer | Allen-Bradley |
| condition | Original Packaging |
Dimensions & Weight for 440R-N23135
| Shipping Dimensions | |
|---|---|
| Weight | 0.46 lbs |
| Length | 4.5 in |
| Width | 0.9 in |
| Height | 3.9 in |
| Box Dimensions (L×W×H) | 4.5 × 0.9 × 3.9 in |
Dimensions shown are for the shipping package. For module-level mechanical dimensions, refer to the manufacturer datasheet.
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Frequently Asked Questions
Where can I find the technical datasheet for the 440R-N23135?
The official manufacturer datasheet is available for download on the 440R-N23135 product page at PLC Exchange. Look for the Tech Data PDF link in the product description.
Does the 440R-N23135 include a warranty?
Yes. Every 440R-N23135 sold by PLC Exchange includes a 2.5-year warranty (30 months, full replacement). Details: https://plcexchange.net/warranty-information/
What is the return policy for the 440R-N23135?
PLC Exchange offers a 30-day worry-free return policy. Eligibility and details: https://plcexchange.net/return-policy/
When will my 440R-N23135 ship?
In-stock orders placed before 4 PM ET ship the same business day via free UPS Ground. Expedited options (Next Day Air, 2nd Day Air) are available at checkout.
Who manufactures the 440R-N23135?
The 440R-N23135 is manufactured by Allen-Bradley. PLC Exchange is an independent reseller specializing in Allen-Bradley industrial automation products.
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