What makes a relay suitable for industrial environments?

Industrial relays are designed for reliable operation in demanding environments. Features such as rugged construction, high electrical endurance, resistance to vibration and temperature changes, and flexible mounting options help support long-term performance in manufacturing, machine control, and automation applications.

What is the difference between a programmable relay and a timer relay?

A timer relay performs specific timing functions, such as delaying the start or stop of equipment. A programmable relay combines timing, logic, and control functions in a single device, making it suitable for applications that require greater flexibility and multiple control tasks.

Relays and Timers for Industrial Automation and Control Systems
Allen-Bradley

Our industrial relays and timers are designed, manufactured and tested to meet the most demanding worldwide standards and ratings.

Overview
Products

Overview

Relays and timers are essential components in industrial control systems, helping manufacturers, OEMs, and panel builders create reliable, scalable automation architectures. As critical elements of machine control and industrial automation, these devices provide precise timing, flexible configuration options, and rugged performance to support applications ranging from standalone control panels to complex manufacturing systems.

Industrial relays and timers perform vital functions within control systems, including electrical isolation, signal amplification, sequencing, switching, and circuit protection. As a trusted relay manufacturer, Allen-Bradley® offers a comprehensive portfolio of industrial relay and timer solutions engineered for demanding manufacturing and process environments. With precise timing accuracy, extensive contact configurations, and versatile mounting options, our control relay products support efficient panel design and dependable operation across a wide range of industrial applications.

Whether you need electromechanical relays, solid-state relays, IEC relays, NEMA relays, or multifunction timing solutions, our automation relays are designed to help machine builders, OEMs, and industrial operators improve system reliability, simplify control panel integration, and maintain consistent production performance.

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Confidence Starts with the Right Industrial Control Foundation

Industrial control relays and timers designed to scale with your system and your standards.

Product

General Purpose Industrial Relays

General purpose industrial relays provide economical, dependable switching for a wide range of control applications. These versatile components offer multiple contact configurations, plug-in bases, and clear status indication—making them ideal for panel builders and OEMs who demand flexibility and simplicity.

General Purpose Relays

Product

General Purpose Industrial Timing Relays

These industrial timing relays deliver adjustable or fixed timing functions for sequencing, delay, and protection tasks. With options for on-delay, off-delay, interval, and multifunction timing, they help streamline repetitive control logic and simplify PLC programming where discrete timing is preferred.

General Purpose Timing Relays

Product

IEC Industrial Relays

IEC relays are built to meet international standards for performance, durability, and application flexibility. Compact footprints, universal accessories, and standardized terminals make them easy to integrate in global machine designs requiring high reliability and rapid availability.

IEC Industrial Relays

Product

NEMA Industrial Relays

NEMA relays deliver rugged performance with wide spacing, high interrupt ratings, and durability engineered for tough industrial conditions. They’re ideal for North American installations that require robust contact carriers and code-compliant performance in demanding environments.

NEMA Industrial Relays

Product

NEMA Industrial Timing Relays

Combining the toughness of NEMA construction with advanced timing functions, these units offer precise control for protective timing and machine sequencing in industrial environments. Their robust build and clear configuration interfaces support consistent performance in heavy-duty applications.

NEMA Industrial Timing Relays

Product

Solid-State Relays

Solid-state relays provide high-speed, silent switching with no mechanical wear—ideal for applications with frequent cycling or sensitive loads. They offer superior reliability, reduced heat generation, and long service life, making them the preferred choice for precision‑driven applications.

Solid-State Relays

Build a Complete, Connected Industrial Control System

Enhance performance with complementary Allen‑Bradley components.

As a leading manufacturer of industrial relays, control relays, and industrial timers, Rockwell Automation provides solutions that help manufacturers, OEMs, and panel builders create reliable, connected control systems. Our Allen-Bradley® relay and timer portfolio is designed to integrate seamlessly with a broad range of automation technologies, supporting efficient machine control, process control, and industrial operations.

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Push Buttons and Signaling Devices

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Circuit and Load Protection

Circuit and Load Protection products protect solenoids, relay coils, pilot devices, PLC outputs, and more.
Power Supplies

Power Supplies

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Motor Controllers, Contactors, Soft Starters, MCCs

Motor Controllers, Contactors, Soft Starters, MCCs

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Safety Products

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Programmable Controllers

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Products

Programmable Controllers

Explore Allen-Bradley CompactLogix and ControlLogix PLC/PAC controllers for scalable, high-performance automation, plus Micro800 solutions.

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Industrial Relay Applications Across Manufacturing and Automation Systems

Industrial relays are used throughout manufacturing facilities, machine control systems, and industrial automation environments to switch circuits, isolate signals, control equipment, and support reliable operation. Common applications include:

Manufacturing Systems

Industrial relays help control production equipment, assembly lines, conveyors, packaging machinery, and material handling systems. They provide dependable switching and control functions that support efficient manufacturing operations and equipment uptime.

Machine Control

Machine builders and OEMs use machine relays to interface between controllers, sensors, actuators, and motors. Relays help manage machine sequencing, enable signal isolation, and support safe, reliable control of automated equipment.

Process Control

Automation relays are widely used in process industries such as food and beverage, water and wastewater, chemical processing, and energy production. They help control pumps, valves, motors, and monitoring devices to maintain stable and efficient processes.

Industrial Control Panels

Panel builders rely on industrial relay solutions to simplify panel design, organize control circuits, and provide isolation between devices. Flexible mounting options and contact configurations help streamline installation and maintenance.

Automation Systems Integration

Automation relays support communication and control between PLCs, drives, sensors, and field devices. By helping manage control signals and electrical loads, they contribute to reliable operation across integrated automation systems.

Equipment Protection and Signal Isolation

Industrial relays help protect sensitive control equipment by isolating circuits and separating low-voltage control signals from higher-power loads. This improves system reliability and helps reduce the risk of component damage.

Industrial Control Relays and Timers FAQs

Electromechanical relays use physical contacts to switch loads, making them cost-effective and versatile for many general applications. Solid‑state relays use semiconductor technology with no moving parts, delivering faster switching, silent operation, and longer life. For high-cycling or sensitive loads, solid-state relays often provide greater reliability.

Selecting IEC vs. NEMA depends on regional standards, design philosophy, and specific application needs. IEC relays are compact, modular, and optimized for worldwide use. NEMA relays are rugged, larger, and designed for heavy-duty North American environments. Both meet different regulatory expectations, so your choice depends on required durability, footprint, and regional compliance.

Timing relays are ideal when you need simple, discrete timing functions—such as on/off delays, interval timing, or repeat cycles—without the cost or complexity of programming a PLC. They’re especially useful in small machines and retrofit applications where quick installation and standalone functionality are priorities.

Standard relays are not designed for safety-certified circuits. Machine safety functions require safety-rated components—such as safety relays or safety controllers—that meet global safety standards like ISO 13849 and IEC 62061. If your application includes emergency stops or safety interlocking, explore certified safety relays.

Most Allen‑Bradley relays and timers offer DIN-rail or panel-mount configurations, with plug‑in bases for fast replacement. These mounting options support streamlined installation, easier wiring access, and reduced panel complexity. Accessories such as hold-down clips and marker tabs help maintain secure and organized panel layouts.

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700-HA Tube Base Relays

These general purpose relays are ideally suited for applications with machine tool, pulp and paper, and transportation OEMs.

700-HB Square Base Relays

These relays are designed for HVAC, elevator, and automotive industry applications and offer IEC closed terminal and NEMA open terminal versions.

700-HC Miniature Ice Cube Relays

These are 4-pole plug-in relays for your low-energy switching applications.

700-HD Flange Mount Square Base Relays

These relays feature blade-style quick connect terminals.

700-HF Miniature Square Base Relays

These relays are ideal for automotive applications.

700-HG Power Relays

These relays are suitable for switching DC loads and are available with an optional magnetic blowout for arc suppression, enabling switching of even higher current DC circuits.

700-HHF Flange Mount Power Relays

These relays are small-sized general purpose relays that switch large loads.

700-HJ Magnetic-latching Relays

These relays control lighting loads or continuous duty applications to save energy.

700-HK Slim Line Relays

These relays are ideal for a variety of high-density isolation and interposing applications.

700-HL Terminal Block Style Relays

These terminal block relays include a 6.2 mm wide per-pole interface and quick connections help reduce installation costs.

700-HP PCB Pin Style

Our Bulletin 700-HP Relays are general purpose relays with plug-in PIN-style printed circuit board (PCB) terminals.

700-HPS PCB Pin Style Safety Relays

These relays feature mechanically linked contacts that are required for safety circuits as per EN 50205 (Type B).

700-HTA Alternating Relays

These relays serve as interposing relays between your controller and field devices and lets you select the primary or secondary load or to alternate between the two.

700-FE Economy Timing Relays

These relays are 17.5 mm wide and have a timing range of 0.05 seconds to 100 hours.

700-FS High-performance Relays

These relays have a 22.5 mm space-saving design and a timing range of 0.05 seconds to 300 hours.

700-HLF Terminal Block Timing Relays

These relays are relay- and socket-assembled modules for high-density applications.

700-HNC Miniature Timing Relays

These relays are some of the smallest timing relays available. They require only 26 mm (1.02 in.) on a DIN Rail, with a socket.

700-HNK Ultra-slim Timing Relays

These relays are some of the smallest plug-in relays on the market. They require only 15.6 mm (5/8 in.) DIN Rail space in a socket.

700-HR Dial Type Timing Relays

These relays are plug-in socket-mounted timing relays. They are easy to set, and can be panel- or DIN rail-mounted.

700-HT Tube Base Timing Relays

These relays are best for general purpose applications and mount on tube-type bases.

700-HV Repeat Cycle Timing Relays

These relays provide cycled on-off switching when a signal is applied. The on and off intervals are independently adjustable.

700-HX Multifunction Digital

These relays use a highly visible negative transmissive status indicator display to increase readability and offer two additional modes for application flexibility.

700-CF IEC Industrial Control Relays

These relays provide features required for demanding industrial applications such as mechanically linked contacts, timing options, and long contact life in an IEC design.

700-EF Industrial Control Relays

These relays offer low power consumption and universal wide range coils which enables four coils to cover control voltages from 24V…500V, 50-60 Hz, DC.