The ABB 1MRK000284-AA is a rugged, high-density 24-channel Binary Input Module designed as a core component of the globally trusted ABB Relion protection and control family. Engineered to capture rapid on/off states from mechanical limit switches, emergency stop pushbuttons, and industrial sensors, this module ensures millisecond-accurate signal telemetry for power system protection and substation automation.
Technical Specifications
Manufacturer: ABB
Part Number / Hardware Code: 1MRK000284-AA
Product Family: Relion Series Protection & Control Ecosystem
Output Contact Capacity: 2 A maximum continuous current at 250 V AC
Galvanic Isolation Barrier: Channel-to-channel and channel-to-bus galvanic isolation
Mounting Infrastructure: Standard 35 mm DIN rail clipping or flush interior panel mounting
Local Telemetry & HMI: Onboard per-channel diagnostic status LEDs and localized physical Test Button
Enclosure Mechanical Ingress Rating: IP20 standard protection class
Extended Environmental Thermal Limits: -40°C to +70°C (-40°F to 158°F)
Physical Housing Dimensions: 15.6 cm (Width) x 12.5 cm (Depth) x 8.1 cm (Height)
Net Hardware Unit Weight: 0.7 kg (1.54 lbs)
Industrial Application Scenarios
The ABB 1MRK000284-AA is deployed inside the low-voltage control compartments of high-voltage circuit breakers, generation switchgear, and central grid marshalling kiosks.
Within utility-scale power transmission substations, it serves as the critical primary data collection interface for automated bay monitoring. When a high-voltage breaker snaps open, its auxiliary position contacts immediately change state; the 1MRK000284-AA captures this millisecond transition across its isolated inputs and routes the binary telemetry across the internal Relion backplane. This enables the central SCADA system to execute automated interlocking logic, trip sequence recordings, and emergency bus transfers safely from a remote console.
