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Help Center1746-RT27 Allen Bradley SLC500 System Replacement Terminal Block 1746RT27
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Rossonix Co., Limited, with over a decade of expertise in industrial automation components since 2011, proudly presents the 1746-RT27 Allen Bradley SLC500 System Replacement Terminal Block. This genuine 1746RT27 terminal block is engineered as a direct replacement for the original Allen Bradley unit, ensuring seamless integration into existing SLC 500 control systems. As a trusted trading partner serving markets across North America, South America, Europe, Oceania, and the Middle East, we deliver high-quality spare parts that minimize downtime and reduce maintenance costs for your automation infrastructure.
Key Features and Benefits:
Direct Replacement – Designed to match the exact footprint and pin assignment of the original 1746-RT27, this terminal block fits perfectly without modification, saving time and effort during field replacement.
Robust Construction – Manufactured with a high-temperature thermoplastic housing and reliable copper alloy screw terminals, it withstands industrial environments with excellent vibration and temperature resistance.
Easy Wiring – The removable screw-terminal design simplifies field wiring and module removal, allowing quick I/O module swaps without disturbing existing wiring.
Compatibility – Works with all Allen Bradley SLC 500 chassis and I/O modules (1746 series), ensuring broad applicability across your installed base.
Cost-Effective – Offers a reliable alternative to OEM parts while maintaining the same performance specifications, helping you control spare parts budget.
| Specification | Details |
|---|---|
| Part Number | 1746-RT27 (also 1746RT27) |
| Number of Positions | 20 positions |
| Wire Size Range | 14-22 AWG (stranded or solid) |
| Rated Voltage | 250V AC/DC |
| Rated Current | 10A per terminal |
| Material | Thermoplastic housing, copper alloy contacts |
| Operating Temperature | -20°C to +70°C |
Detailed Product Description:
The 1746-RT27 terminal block serves as the critical interface between field devices (sensors, actuators) and the SLC 500 I/O modules. Each pin is clearly labeled for easy identification, and the robust screw-clamp mechanism ensures secure connections even in high-vibration environments. Whether you are performing routine maintenance or upgrading a control panel, this replacement block restores full functionality without the need for special tools or training.
Why Choose Rossonix for Your Automation Needs?
Proven Supply Chain – With annual export value exceeding US$5 million and an overseas office, we maintain strong inventory levels to fulfill bulk orders promptly from our Shenzhen warehouse.
Quality Assured – Our operations are certified under ISO9001 and ISO9000 standards, reflecting our commitment to consistent product quality and customer satisfaction.
Global Reach – We ship to over 10 main markets worldwide, including North America, Europe, South America, and Oceania, with flexible port options (Shenzhen, Hong Kong, Europe).
Fast Support – Our dedicated team of 11–50 professionals responds within 24 hours to technical inquiries or order status requests.
Trust and Reliability
Since 2011, Rossonix Co., Limited has built a reputation for delivering genuine-quality automation components at competitive prices. Every 1746-RT27 terminal block undergoes visual and functional inspection before shipment to ensure it meets or exceeds original specifications. We understand that your production lines depend on consistent performance, which is why we offer customizable packaging and a straightforward replacement policy for any manufacturing defects.
Take the next step in optimizing your SLC 500 system maintenance. Contact our sales team today to request a quote or sample, and experience the reliability that thousands of customers across the globe trust. Order your 1746-RT27 replacement terminal block now and keep your automation running smoothly.
Frequently Asked Questions (FAQ)
Q1: Is this 1746-RT27 terminal block compatible with all SLC 500 chassis?
Yes, it is designed as a direct replacement for the original Allen Bradley 1746-RT27 and fits all standard SLC 500 racks (e.g., 1746-A2, A4, A7, A10, A13).
Q2: What is the difference between the 1746-RT27 and other terminal blocks like the 1746-N3?
The 1746-RT27 is a 20-point screw terminal block used for field wiring, while the 1746-N3 is a different style (e.g., 32-point). Always check your module's connector type. Our RT27 matches the original Allen Bradley designation.
Q3: Can I use this terminal block on a 1746-IB16 input module?
Yes, the 1746-RT27 is commonly used with 16- or 32-point digital I/O modules that accept a 20-pin removable terminal block. Double-check your module's manual to confirm compatibility.
Q4: Do you offer a warranty on this replacement part?
Yes, we back our products with a standard warranty against defects in materials and workmanship. Detailed warranty terms are available upon request.
Q5: What wire sizes can I terminate with this block?
The terminal accepts solid or stranded wire from 14 AWG to 22 AWG. It is recommended to use a slotted screwdriver for tightening the screws securely.
Q6: How do I remove the terminal block from the I/O module?
Use a flat-blade screwdriver to gently pry the locking tab on the side, then pull the block straight out. Avoid excessive force to prevent damage to the module connector.
Q7: Is this genuine Allen Bradley or a third-party replacement?
This is a high-quality third-party replacement manufactured to match OEM specifications. It is not an original Rockwell Automation product but offers equivalent performance at a lower cost.
Q8: Can I order in bulk with custom labeling?
Yes, we support bulk orders and can provide customized packaging or labeling upon request. Contact our sales team for volume pricing and lead times.
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