B-Line D26MR802A D26 Series AC Relay

The D26MR802A D26 Series relay runs on a 110/120V AC coil rated for 50 to 60 Hz, so it works on standard North American control power at either line frequency. If your control circuit is 24V or 240V, this is the wrong coil and you need a different model in the series.

Eight poles, all eight of them normally open (8NO). Every contact is open with the coil de-energized and closes when the coil is powered. There are no normally closed contacts on this configuration, so if your control scheme needs an NC contact for an interlock or a stop circuit, you need a different contact arrangement in the D26 family.

Plan for roughly 7.31 inches long by 3.57 inches high by 2.38 inches wide, and about 2 pounds of weight on the panel. With eight poles it's a full-width machine tool relay, not a compact ice-cube type, so check your DIN rail or subpanel run before you commit the space.

It has a mechanical latch. That means the contacts stay in their last commanded position when coil power drops, instead of springing back open the way a standard AC relay does. Important on a machine tool circuit: on a power interruption, latched contacts remain closed, so your restart logic has to account for that rather than assuming everything resets to de-energized.

Order it as D26MR802A. That is the manufacturer part number, from B-Line's D26 Series, and it identifies the 110/120V AC coil with the eight normally open pole arrangement and the mechanical latch. Adjacent D26 numbers change the coil voltage or the NO/NC mix, so the full suffix matters.

Yes, the coil is rated 50 to 60 Hz, so it will pull in on either frequency as long as the supply is 110/120V AC. A 220/230V 50 Hz control circuit will not work with this coil.

The manufacturer's spec sheet for D26MR802A is linked from the product information and covers the detail beyond the coil and contact arrangement. For the values needed to size the circuit up front: 110/120V AC coil, 50 to 60 Hz, eight normally open poles, mechanical latch.