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Macromatic Relays Monitor and Protect Your Equipment Macromatic · Products for Automation
Macromatic relays
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| Relay type | Detects / does | Key specs | Typical uses |
|---|---|---|---|
| Time delay | Delay, flash, repeat or time out a function. Use the timing functions chart to compare functions and diagrams. | 12 timing functions; 0.01 sec to 10,230 hours; 12 to 240 V; encapsulated, plug-in or 1/16 DIN | Material handling, pumps, irrigation, generators, HVAC |
| Phase monitor | Phase loss, reversal, unbalance | Single or multi-fault models; 190 to 600 V AC | Wastewater, pumps, packaging, generators |
| Voltage monitor | Over, under or out-of-band voltage | Single-phase; voltage band models | Pumps, packaging, irrigation, generators |
| Alternating | Equalize run time on 2 or 3 loads | Selector-switch and door-mount models | Wastewater, pumps, HVAC |
| Current sensing | Over, under or either current fault | 0.5-5, 2-20 and 5-50 A; 0.15-7 sec and 0.5-50 sec trip delay; encapsulated | Material handling, pumps, packaging, generators |
| Percentage timer | ON time as a share of a cycle | Panel mount; some remember timing after power loss | Irrigation, heating and cooling, motors, chemical feed |
| Seal leak / temperature | Leaks and over-temperature in submersible pumps | Door-mount models; connects to an audible alarm | Submersible pumps, lift stations |
| Intrinsically safe | Control a load in hazardous locations | Plug-in or DIN-rail housings | Refineries, grain elevators, lift stations |
| General purpose | Switch loads in control circuits | Ice-cube plug-in with LED indicator (8-pin, 11-pin or octal socket) or slim DIN-rail with socket attached | Control panels, motors, compressors |
| Liquid level control | Monitor the level of conductive liquid; pump up or pump down control | Single and dual probe plug-in models; 24 V AC/DC, 110-120 V AC/DC or 240 V AC; 1 to 60 sec delay; 4.7K-100K and 1K-250K sensitivity | Pump control, tanks, water and wastewater |
Popular Macromatic models cover timing, phase monitoring, percentage timing, pump seal protection, general purpose switching and load alternation.
Compact 17.5 mm DIN-rail time delay relay with universal 12-240 V AC/DC input, 10 selectable timing functions and DPDT output contacts.
Three-phase plug-in monitor for phase reversal, phase loss, phase unbalance, overvoltage and undervoltage in higher-voltage industrial systems.
30-second percentage timer for applications that require adjustable ON time as a percentage of the total cycle, including irrigation, heating, cooling and chemical feed systems.
Single-channel pump seal failure relay for monitoring moisture leakage in submersible pump seals, with adjustable sensitivity and LED status indication.
6 mm slim DIN-rail relay for high-density control panels. The relay and socket are supplied as one unit with LED status indication and finger-safe protection.
Cross-wired duplexor alternating relay designed to balance operating time between two loads, with LED lead-load indication and a selector switch for manual lead selection.
Check before you order: Verify voltage, timing range, contact rating, housing and socket on the product page. Specifications and stock are subject to change.
| Question | Why it matters |
|---|---|
| What is the control voltage? | Listings span 12 V AC/DC to 575 V AC. Voltage must match or be within range if a range is specified. |
| Single-phase or 3-phase? | Phase monitors protect 3-phase systems; voltage monitors protect single-phase. |
| What timing range is needed? | Ranges run from 0.01 sec to 10,230 hours. Pick a range that leaves room on both ends. |
| How will it mount? | Surface, DIN-rail or plug-in. Plug-in relays need a matching socket, often octal, which are usually sold separately. |
| What is the environment? | Encapsulated housings suit harsh conditions. Hazardous locations call for intrinsically safe relays (Note that intrinsically safe relays still need to be mounted in a safe location). |
Macromatic makes industrial control relays that monitor electrical loads, voltages, phase errors, and other machine functions. The line includes time delay, phase monitor, voltage monitor, alternating, current sensing, percentage timers, seal leak, and intrinsically safe relays, plus general purpose models.
Many are. American-made Macromatic relays are typically built to order and carry a 5-year warranty. Confirm origin and warranty before ordering.
Use a phase monitor on 3-phase equipment to catch phase loss, phase reversal and unbalance. Use a voltage monitor on single-phase systems to catch over or under voltage, or a voltage band relay to keep voltage inside a set range.
Surface mount, DIN-rail mount and plug-in, depending on the model. Most Macromatic plug-in relays use an octal socket. Sockets are typically sold separately and are linked on the product page to the corresponding relay.
An alternating relay. It equalizes run time across 2 or 3 loads, and some models add a selector switch to choose which load runs first or to alternate.
Send us the voltage, function and mounting style. We will help you identify the right Macromatic part.
Products for Automation, a division of Major Electronix Corporation · Eastlake, Ohio
Warranty and availability vary by model; confirm on each product page.
