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Transparent octal-base phase monitor relay, 8 pins, 1.7 by 2.4 by 2.9 inches

Macromatic

Macromatic PMPU Phase Monitor Relay 190-250V Low

SKU CH-SWTM-6NYTF

Monitors three-phase voltage from 190 to 500 V AC with automatic or manual restart delay up to 300 seconds

  • Product typeIndustrial Electrical Controls & Automation
  • Product colorTransparent
  • Monitors phase loss, reversal, unbalance, overvoltage and undervoltage for three-phase protection
  • Auto or manual restart with 1 to 300 second delay reduces nuisance tripping
  • SPDT contacts rated 10 A at 277 V AC and 7 A at 30 V DC handle control loads
  • Plug-in octal base fits standard 8-pin sockets for quick installation
  • Compact 2.9 in deep, 2.4 in high, 1.7 in wide body saves panel space

Phase monitor relay for 190–250 V AC systems

The Macromatic PMPU is a plug-in phase monitor relay designed for three-phase circuits operating between 190 and 500 V AC. It monitors overvoltage, undervoltage, phase loss, phase reversal and phase unbalance. An SPDT contact rated at 10 A @ 277 V AC or 7 A @ 30 V DC switches the load. Auto or manual restart with a 1 to 300 second delay is selectable.

Suits panels needing basic three-phase protection

This unit fits installers who need a compact octal-base relay to guard motors or equipment against common three-phase faults. It does not suit applications that require communication interfaces, data logging or per-phase current monitoring. Buyers who need more than SPDT switching or a different voltage window should look at other models.

Octal socket mount frees DIN-rail space

The relay plugs into a standard 8-pin octal socket measuring 1.7 in wide, 2.4 in high and 2.9 in deep. Plug-in mounting allows quick replacement without rewiring and leaves DIN-rail room for other modules. Electrical operating durability is rated at 100,000 cycles. Ensure the control circuit can supply the required coil voltage for the chosen restart mode.

How it compares

Measured against everything we stock in AV Accessories & Components, at today’s prices. Recalculated every night.

Price $77.99
Pricier than about 69% of the 3,838 comparable items (median $41.99).

Specifications

Product
Brand nameMACROMATIC
Product typeIndustrial Electrical Controls & Automation
Product colorTransparent

Questions about this item

What supply voltage must my panel provide for this relay to operate?

The relay accepts an input voltage range of 190 to 500 V AC, so your panel must deliver within that window.

Can the 8-pin octal base plug into the socket I already have on my DIN-rail?

Yes, the relay uses an 8-pin octal plug-in base; match that socket pattern on your rail for a direct fit.

How do I verify the relay is protecting my motor after installation?

Apply power and confirm the LED sequence shows normal rotation; the auto restart will engage after the 1 to 300 sec delay if a fault clears.

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