ABB N93-3005-05 (1MRK002311-AAr11) – Auxiliary Module for Protection & Control Panels

The ABB N93-3005-05 with code 1MRK002311-AAr11 appears to be a variant-level auxiliary module used alongside ABB protection and control equipment, typically within relay panels and substation automation cabinets. From my experience, modules in this 1MRK family are designed to cleanly route signals, simplify testing/commissioning, and improve panel wiring reliability. If you’re upgrading a bay or replacing a field-worn unit, this variant helps maintain interface compatibility and keeps downtime low.

Company’s Order Placement Process and Guarantees

• Warranty: 365 days
• Lead time: 1 week when in stock; no more than one month at the latest
• Payment: 50% advance payment; full payment before delivery
• Express options: FedEx, UPS, DHL

Key Features

• Purpose-built relay accessory – Sized and terminated to integrate with ABB protection/control panels without reworking existing wiring.
• Clean signal handling – Supports organized routing of digital/analog signals between the field and the host IED, which typically reduces commissioning errors.
• Panel-friendly footprint – Fits standard cabinet layouts; usually mounted on DIN rail or a relay subrack with straightforward access for service.
• Serviceability in mind – Clear terminal labeling and modularity make swap-outs faster during shutdowns.
• Variant identification – The 1MRK002311-AAr11 suffix helps maintenance teams match the exact build for spares consistency.

Technical Specifications

Application Fields

This module is well-suited to substation automation projects, medium-voltage and high-voltage protection bays, industrial power distribution switchboards, and retrofit programs where wiring integrity and testability matter. You might notice that it reduces panel clutter, especially during expansions where additional signaling needs a tidy interface to the host relay.

Advantages & Value

• Reliability – Built to ABB’s substation-grade practices; typically robust against panel vibration and thermal cycling.
• Compatibility – Variant coding (AAr11) helps ensure fit with the intended relay family and wiring scheme.
• Cost Control – Drop-in replacement minimizes rework time, which in many cases is where hidden costs pile up.
• Traceability – Clear part coding simplifies spares management across fleets.
• Technical Support – We can help verify fit against your relay type and provide wiring guidance to speed commissioning.

Installation & Maintenance

• Environment – Install in a clean, ventilated cabinet; maintain clearances for wiring bends and service access.
• Mounting – Use standard 35 mm DIN rail or designated subrack mounting points; secure with end clamps where necessary.
• Wiring – Follow the host relay’s terminal assignment. Torque screws to the indicated value and label conductors for future service.
• Safety – De-energize circuits before handling; apply ESD precautions when interacting with relay accessories.
• Routine checks – Periodically verify terminal tightness, inspect for discoloration or loosened conductors, and keep the cabinet dust-free.
• Firmware/Settings – If used alongside a relay configuration change, align signal mapping and documentation during commissioning.

Quality & Certifications

• CE compliant
• RoHS compliant
• Manufactured under ISO 9001 quality systems
• Manufacturer’s standard warranty applies; we provide 365 days coverage on supply

Suggested Supporting Components

• ABB test switches (e.g., RTXP/RTXF series) for safe isolation and secondary injection work.
• 35 mm DIN rail accessories: end clamps, marker strips, and terminal covers for neat panel integration.
• Shielded signal cables and labeled ferrules to maintain EMC discipline in protection circuits.

If you share the target relay type or the cabinet layout, I can double-check the AAr11 variant fit and confirm mounting/wiring details before we ship. That typically saves a site revisit.