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Small rectangular relay with octal base, eight flat pins, grey enclosure, potentiometer dial on top

Macromatic

Macromatic TR-55122-12 time delay relay

SKU CH-E620-BGTPE

Single-function time delay relay with cycle-on operation, 120 V AC/DC coil, DPDT contacts rated 10 A at 240 V AC and 30 V DC, adjustable 3 s to 5 min, octal plug-in base, IP20 enclosed

  • Single-function Cycle On timing simplifies repetitive control tasks
  • Adjustable 3-second to 5-minute delay via potentiometer covers wide timing needs
  • DPDT contacts rated 10 A at 240 V AC and 30 V DC handle substantial loads
  • Octal 8-pin plug-in base enables quick socket installation and replacement
  • Enclosed IP20 housing protects internal components in industrial environments

Macromatic TR-55122-12 Time Delay Relay

The Macromatic TR-55122-12 is a single-function time delay relay built for industrial control panels and machinery circuits. It provides a Cycle On delay function adjustable by potentiometer across a 3 sec to 5 min range. The unit mounts via an 8-pin octal socket and accepts 120V AC/DC coil voltage.

DPDT Contact Relay for Timing Upgrades

This relay replaces fixed-timer modules or basic on-delay units when a repeatable cycling action is required. The jump is worth it for panels needing enclosed IP20 construction and a single adjustable delay without programming. It suits 10 A loads at 240V AC or 30V DC where a plug-in form factor simplifies maintenance.

10 A Cycling Relay with 3 sec to 5 min Range

The relay comfortably handles motor starters, lighting contactors and process-timer circuits up to its 10 A contact rating. Headroom runs out above 240V AC or 30V DC switching, and the single Cycle On function cannot cover on-delay, off-delay or one-shot timing needs. Buyers requiring multiple delay modes or higher voltage isolation should look elsewhere.

Highlights

  • Single-function Cycle On timing simplifies repetitive control tasks
  • Adjustable 3-second to 5-minute delay via potentiometer covers wide timing needs
  • DPDT contacts rated 10 A at 240 V AC and 30 V DC handle substantial loads
  • Octal 8-pin plug-in base enables quick socket installation and replacement
  • Enclosed IP20 housing protects internal components in industrial environments

Specifications

BrandMACROMATIC

Questions about this item

What octal socket and pin spacing does the TR-55122-12 require for mounting?

It uses an 8-pin octal base that plugs into a standard octal socket; the flat-pin width is not applicable, so any compatible octal socket with 8 positions will accept it.

How do you set the Cycle On delay on the potentiometer, and what mistake do installers make?

Turn the potentiometer between the 3-second minimum and the 5-minute maximum; the common error is powering the 120 V AC/DC coil before the delay is dialled in, causing immediate cycling.

When should the DPDT contacts be checked or the relay replaced?

Inspect the 10 A DPDT contacts after extended use at 240 V AC or 30 V DC loads; replace the sealed IP20 unit if contact resistance rises or the Cycle On function drifts outside the 3 s to 5 min range.

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