Macromatic TR-51721-09 - THR-1 Time Delay Relays TR-51721-09
Macromatic

TR-51721-09


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Overview

The **Macromatic THR-1 Time Delay Relay (TR-51721-09)** is a high-performance industrial timing solution engineered for precision, reliability, and durability in demanding automation and process control applications. Designed to meet the rigorous demands of modern industrial environments, this relay delivers consistent, repeatable time delays to optimize machinery performance, enhance operational efficiency, and reduce downtime. Whether integrated into HVAC systems, conveyor belts, motor controls, or industrial automation networks, the THR-1 ensures seamless timing coordination that aligns with your operational workflows. At the core of the THR-1’s functionality is its **adjustable time delay capability**, allowing engineers and technicians to configure delays from milliseconds to hours—tailored to specific application requirements. This flexibility makes it ideal for applications such as delayed start/stop sequences, interval timing, pulse generation, and fail-safe control in safety-critical systems. The relay’s **solid-state design** eliminates mechanical wear, ensuring long-term reliability and minimal maintenance, which is essential in continuous-duty industrial settings. **Key Features and Benefits:** - **Adjustable Time Delays:** Programmable delays enable precise control over machine cycles, reducing energy consumption and improving process synchronization. - **High Durability:** Constructed with industrial-grade components, the THR-1 withstands harsh conditions, including temperature extremes, vibration, and electrical noise, ensuring consistent performance in factories, plants, and outdoor installations. - **Easy Installation and Integration:** The compact, DIN-rail mountable design simplifies installation in control panels, while standard input/output configurations ensure compatibility with most PLCs, motor starters, and automation systems. - **Wide Voltage Range:** Compatible with common industrial control voltages (e.g., 12–240 VAC/DC), the THR-1 eliminates the need for multiple relay variants, streamlining inventory and reducing costs. - **Safety and Compliance:** Designed to meet industry standards for electrical safety and environmental resilience, the THR-1 provides peace of mind in applications where reliability is non-negotiable. **Typical Applications:** In **manufacturing**, the THR-1 is widely used for controlling conveyor systems, ensuring sequenced startups to prevent overloads and jams. In **HVAC systems**, it manages staggered fan and compressor activation to balance energy usage and maintain optimal climate control. Industrial automation relies on the THR-1 for **delayed shutdowns** in emergency stop circuits or **sequential activation** of actuators in robotic assembly lines. It is also a preferred choice in **water treatment facilities**, where precise timing controls pump cycles and valve operations to maintain process efficiency. **Why Choose Macromatic?** Macromatic has been a trusted name in industrial control solutions for decades, renowned for engineering products that combine innovation with rugged reliability. The THR-1 Time Delay Relay exemplifies this commitment, offering a balance of performance, longevity, and ease of use. Professionals in industries such as oil and gas, food processing, automotive manufacturing, and wastewater treatment rely on Macromatic relays to maintain operational integrity under the most challenging conditions. With the **TR-51721-09**, you gain not just a timing device, but a critical component that enhances system efficiency, reduces unplanned downtime, and supports long-term productivity goals. For engineers specifying control components, the THR-1 delivers the precision and robustness required for mission-critical applications. Its **low power consumption**, **high switching capacity**, and **resistance to electromagnetic interference (EMI)** make it a standout choice in both new installations and retrofits. Whether you’re designing a new production line or upgrading legacy equipment, the Macromatic THR-1 Time Delay Relay provides the timing control you need to operate at peak performance.
  • Adjustable time delays for precise control in automation and process systems
  • Solid-state design for long-term reliability and minimal maintenance
  • Wide voltage compatibility (12–240 VAC/DC) for flexible integration
  • Compact DIN-rail mountable design for easy installation
  • Industrial-grade durability for harsh environments and continuous-duty use

Specifications

Mounting Type
DIN-Rail
Series
THR-1
Voltage Rating
12-240 VAC/DC
Relay Accessories, Sockets & Clips, Printed Circuit Board, Phenolic, Printed Circuit Board, 6, Socket, Potter & Brumfield R10

1-1393143-3

Relay Accessories, Sockets & Clips, Printed Circuit Board, Phenolic, Printed Circuit Board, 6, Socket, Potter & Brumfield R10
Relay Accessories, Sockets & Clips, Solder, Polyester, Printed Circuit Board, 2, Socket, Potter & Brumfield R10

1-1393143-6

Relay Accessories, Sockets & Clips, Solder, Polyester, Printed Circuit Board, 2, Socket, Potter & Brumfield R10
RTXD Extractor Tool

6896057-1

RTXD Extractor Tool
Power supply for DIN-rail

PS-60

Power supply for DIN-rail
IP67 SCP-X Extreme Environment Series Power Supply. Double Stacked, Output Power 2 x 100W, Output Voltage 24 Vdc, Output Current 7.6 A total, 3.8 A per pair

SCP102D24X-C02

IP67 SCP-X Extreme Environment Series Power Supply. Double Stacked, Output Power 2 x 100W, Output Voltage 24 Vdc, Output Current 7.6 A total, 3.8 A per pair

Frequently Asked Questions about Macromatic

What certifications and standards do Macromatic products comply with?

Macromatic products are certified with ULus and cULus approvals for use in the United States and Canada, covering a wide range of industrial control products. Their product line includes UL-listed devices for various voltage ranges (120V, 208-277V) and NEMA enclosure types, ensuring compliance with North American industrial standards.

What industries and applications are Macromatic products used for?

Macromatic products are used across multiple critical industrial sectors, including water/wastewater, pump and motor control, irrigation, oil and gas, HVACR, material handling, lifts and elevators, and other systems requiring process control and protection. Their industrial control products deliver high-quality monitoring, control, and protection solutions for electrical processes and equipment fault protection.

What technical support does Macromatic offer?

Macromatic offers comprehensive technical support through multiple channels, including a dedicated online Technical Resource Center at macromatic.com/technical-support and direct contact with technical advisors. Their support includes engineering assistance for unique applications, help with product selection, custom-engineered solutions, and troubleshooting for product setup. Customers can reach out via their website contact form or contact their technical team directly to get expert guidance on their industrial control products.

What are the main product lines offered by Macromatic?

Macromatic offers a comprehensive range of industrial control, monitoring, and protection products across multiple product lines, including Alternating Relays, Current Sensing Relays, General Purpose Relays, Intrinsically Safe Barrier Relays, Liquid Level Control Relays, Voltage Monitor Relays, and Time Delay Relays. These products serve critical applications in industries such as water/wastewater, pump and motor control, irrigation, oil and gas, HVACR, material handling, and lift systems.

What are the key features of Macromatic products?

Macromatic products feature innovative industrial control solutions with key characteristics including precise time-based control, compact design, and comprehensive protection capabilities. Their product lines cover voltage monitoring, time delay relays, and control products for multiple industries like water/wastewater, pump and motor control, oil and gas, and HVACR. Standout features include space-saving designs, multiple time delay functions, voltage band protection, and customizable solutions with quick prototype turnaround.

What accessories are available for Macromatic products?

Macromatic offers a comprehensive line of accessories for their industrial control products, including industry-standard sockets (8-pin, 11-pin octal, and 12-pin square), back-mounted sockets for panel mounting, retainers, hold-down springs, terminal covers, and replacement terminals. These accessories are designed to simplify relay installation, replacement, and provide additional mounting and protection options for Macromatic products.

How are Macromatic products typically installed?

Macromatic products are typically installed using industry-standard 8-pin and 11-pin octal sockets, as well as 12-pin square sockets that simplify relay installation. These sockets allow for easy mounting, with back-mounted socket options enabling flange-style enclosures to be panel mounted. Additional installation accessories like retainers, hold-down springs, terminal covers, and replacement terminals are available to support precise and secure product installation.

What communication protocols do Macromatic products support?

Macromatic communication modules support multiple industrial communication protocols, including Modbus RTU, Modbus TCP/IP, PROFIBUS, PROFINET, DeviceNet, EtherNet/IP, and IEC 61850. These protocols enable flexible network integration across industrial automation systems, providing comprehensive connectivity and communication capabilities for diverse industrial applications.

What environmental ratings do Macromatic products have?

Macromatic products feature robust environmental ratings across multiple NEMA and IP standards. Most product lines offer NEMA Type 3R, 4, and 4X ratings, with specific models providing protection against dust, water, and corrosion for both indoor and outdoor applications. Select product series like DS20, DS30, DR30, and DR50 come standard as 3R with optional 4X upgrades available.