Macromatic TR-51721-17 - THR-1 Time Delay Relays TR-51721-17
Macromatic

TR-51721-17

Contact for Pricing

Overview

The **Macromatic THR-1 Time Delay Relay (TR-51721-17)** is a precision-engineered timing control solution designed to meet the rigorous demands of industrial environments. As a trusted component in automation, process control, and machinery systems, this relay delivers consistent, repeatable timing performance where reliability is non-negotiable. Built by **Macromatic**, a leader in industrial control solutions, the THR-1 ensures seamless integration into applications requiring delayed activation, sequencing, or cycle control—such as conveyor systems, pump stations, HVAC controls, and manufacturing automation lines. **Key Features and Functionality** The THR-1 Time Delay Relay is engineered for durability and accuracy, featuring adjustable delay settings that allow operators to configure precise timing intervals for on-delay, off-delay, or interval functions. Its robust construction—housing high-quality components—ensures resistance to vibration, temperature fluctuations, and electrical noise, making it ideal for harsh industrial settings. The relay’s compact design and DIN-rail mounting compatibility simplify installation in control panels, while its clear LED indicators provide immediate visual feedback on operational status, reducing troubleshooting time. **Industry Applications and Use Cases** In **manufacturing**, the THR-1 is widely deployed for sequencing operations, such as controlling motor starts, valve activations, or process initiation delays to synchronize multi-stage production lines. **HVAC systems** rely on time delay relays to manage equipment cycling, preventing short-cycling of compressors or fans and extending system lifespan. Water and wastewater facilities use the THR-1 to coordinate pump operations, ensuring staged activation to maintain pressure stability and reduce energy consumption. Additionally, the relay is a critical component in **material handling systems**, where precise timing ensures smooth conveyor transitions, preventing jams or misalignments. **Why Choose Macromatic?** With decades of expertise in industrial control technology, **Macromatic** is recognized for producing relays that combine innovation with rugged reliability. The THR-1 Time Delay Relay exemplifies this commitment, offering a cost-effective solution that minimizes downtime and maintenance costs. Its compliance with industry standards (including UL and CE certifications) ensures compatibility with global electrical systems, while Macromatic’s dedicated technical support and extensive distributor network provide peace of mind for procurement and deployment. **Installation and Maintenance Considerations** Professionals appreciate the THR-1’s user-friendly design, which includes screw-terminal connections for secure wiring and a wide voltage range (typically 12–240V AC/DC) to accommodate diverse power requirements. For optimal performance, install the relay in a well-ventilated control panel away from excessive heat or corrosive atmospheres. Regular inspection of connections and delay settings—especially in high-cycle applications—helps maintain peak functionality. Macromatic’s documentation and online resources further simplify setup, with application notes covering common timing scenarios and troubleshooting guides for common issues like contact welding or timing drift. **Long-Term Value and ROI** By replacing less reliable timing mechanisms with the **Macromatic THR-1**, facilities can achieve measurable improvements in operational efficiency. The relay’s ability to reduce nuisance tripping, prevent equipment damage from improper sequencing, and extend the lifespan of connected devices translates to lower lifecycle costs. Whether deployed in a new automation project or as a retrofit solution, the THR-1 Time Delay Relay (TR-51721-17) delivers dependable performance that aligns with the demands of modern industrial operations—where precision, durability, and uptime are paramount.
  • Adjustable delay settings for on-delay, off-delay, and interval functions
  • Robust construction with high-quality components for harsh industrial environments
  • Compact DIN-rail mounting design with LED status indicators
  • Wide voltage range (12–240V AC/DC) for global compatibility
  • UL and CE certified for reliable performance in industrial applications

Specifications

Connection Type
Screw Terminal
Mounting Type
DIN-Rail
Series
THR-1
Voltage Rating
12–240V AC/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
RTXP 18

RK926011-BC

RTXP 18
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.