The ABB DO821 is an S800 I/O relay output module with eight individually isolated normally closed contacts rated for 5–250 V AC/DC and up to 3 A per channel.
8 isolated normally closed relay outputs · 5–250 V AC/DC · 3 A maximum per channel.
DO821 provides eight individually isolated normally closed relay contacts for 5–250 V AC/DC field circuits.
Confirm article number 3BSE013250R1, normally closed contact logic, 5–250 V AC/DC load rating, 3 A channel limit, external fuse and suppression, compatible MTU and project channel assignment before replacement.
Source: ABB DO821 Data Sheet, article number 3BSE013250R1.
Official ABB manufacturer-reference information for DO821, article number 3BSE013250R1.
The ABB DO821 is an S800 I/O relay output module with eight individually isolated normally closed contacts rated for 5–250 V AC/DC and up to 3 A per channel. Confirm article number 3BSE013250R1, normally closed contact logic, 5–250 V AC/DC load rating, 3 A channel limit, external fuse and suppression, compatible MTU and project channel assignment before replacement.
OFFICIAL DATASHEET ↗Send the complete model, article number, quantity, revision, installed system and your technical or purchasing question.
Source: ABB DO821 Data Sheet, article number 3BSE013250R1.
ABB ↗ DO821 is an 8-channel relay output module that provides eight individually isolated normally closed contacts for 5–250 V AC/DC circuits. Its configuration must remain aligned with the installed hardware, wiring and controller project.
Eight individually isolated normally closed relay contacts.
5–250 V AC/DC with up to 3 A maximum continuous current per channel.
Use application-rated external fusing and suitable suppression.
Confirm MTU type, normally closed logic, load voltage, fuse, suppression and saved channel assignment.
Switches eight isolated AC or DC field circuits through normally closed relay contacts.
Each relay output channel is individually isolated.
Provides field wiring and mechanical connection for the relay module.
Transfers output commands and configured OSP states within the S800 I/O station.
A clear workflow for sourcing, verification, shipment preparation, delivery and product assurance.
Include the complete part number, quantity and delivery destination.
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