ABB IRB 1600 / IRB 4600 Cable Harness Modules: IRB16003HAC021455-001 IRB46003HAC043963-001 3HAC043963-001

Technical Dossier

Product Details And Specifications

ABB IRB 1600 / IRB 4600 Series: Comprehensive Cable Harness Range and Technical Overview

The ABB IRB 1600 and IRB 4600 are six-axis industrial robot platforms deployed at scale across global heavy industry — including automotive body-in-white lines, chemical plant material handling, refinery maintenance automation, and nuclear facility remote operations. The cable harness assemblies within these platforms are load-bearing signal and power conduits that interconnect the robot controller (IRC5) with axis motors, encoders, and end-effector I/O. Harness integrity is a primary determinant of robot uptime; a degraded harness produces axis faults, encoder signal loss, and unplanned production stops. DriveKNMS maintains a dedicated inventory of ABB IRB 1600 and IRB 4600 harness assemblies to support facilities operating these robots beyond their original service window.

The Evolution of IRB 1600 / IRB 4600 Cable Harness Architecture

ABB introduced the IRB 1600 in 2004 as a compact, high-speed arc welding and assembly robot rated to 6 kg / 10 kg payload at 1.45 m reach. The IRB 4600 followed as a medium-payload platform (20 kg – 60 kg) targeting spot welding, machine tending, and palletizing. Both platforms use the IRC5 controller family and share a common harness connector philosophy — M23 circular connectors on the base and wrist, with a routed cable spine through the upper arm.

Early-generation harnesses (pre-2010) used individual shielded conductors bundled in a PVC outer jacket. From 2010 onward, ABB transitioned to composite harness assemblies with integrated signal and power conductors in a single routed bundle, reducing installation time and improving EMI shielding. The 3HAC043963-001 assembly represents the mature-generation harness for the IRB 4600 customer connection interface — the segment between the robot wrist flange and the customer-supplied end-effector. Compatibility spans IRB 4600 variants with axis-6 wrist configurations using the standard 24V I/O and DeviceNet/ProfiNet signal interface.

As both series have entered the mature/end-of-active-production phase for certain sub-variants, sourcing OEM harness assemblies from the open market has become the primary maintenance strategy for facilities unwilling to undertake full robot replacement. DriveKNMS provides lifecycle extension support for exactly this scenario.

IRB 1600 / IRB 4600 Full Catalog & Functionalities (SKU List)

The following SKUs represent verified components within the ABB IRB 1600 and IRB 4600 robot platforms. Each entry reflects a discrete assembly or module with a defined functional role.

IRB16003HAC021455-001: Cable harness, customer connection, IRB 1600 upper arm to wrist flange, 24V I/O signal bundle.
IRB46003HAC043963-001: Cable harness, customer connection, IRB 4600 wrist interface, composite signal/power assembly.
3HAC043963-001: ABB OEM part number for IRB 4600 customer connection harness; cross-references IRB46003HAC043963-001.
3HAC021455-001: ABB OEM part number for IRB 1600 customer connection harness; cross-references IRB16003HAC021455-001.
3HAC026253-001: Cable harness, axis 1–3, IRB 4600, lower arm power and encoder bundle.
3HAC026254-001: Cable harness, axis 4–6, IRB 4600, upper arm signal and motor power.
3HAC025338-001: Cable harness, axis 1–3, IRB 1600, lower arm motor and resolver wiring.
3HAC025339-001: Cable harness, axis 4–6, IRB 1600, upper arm encoder and brake circuit.
3HAC14550-1: Dress pack assembly, IRB 4600, external cable management for welding/process tools.
3HAC14551-1: Dress pack assembly, IRB 1600, external cable routing for arc welding applications.
3HAC031683-001: Signal cable, SMB (Serial Measurement Board) to axis computer, IRC5 controller interface.
3HAC031684-001: Power cable, axis 1–3 motor drive, IRC5 to IRB 4600 base connector.
3HAC17484-1: Connector kit, M23 circular, wrist flange, IRB 1600 / IRB 4600 compatible.
3HAC028357-001: Cable harness, brake release circuit, IRB 4600, axis 1–6 gravity brake control.
3HAC028358-001: Cable harness, brake release circuit, IRB 1600, axis 1–6 gravity brake control.
3HAC026255-001: Protective conduit assembly, upper arm, IRB 4600, abrasion-resistant outer sleeve.
3HAC025340-001: Protective conduit assembly, upper arm, IRB 1600, flexible PVC outer jacket.
3HAC044168-001: Cable harness, complete replacement kit, IRB 4600/60, full axis 1–6 bundle set.

Sourcing Hard-to-Find & Obsolete IRB 1600 / IRB 4600 Parts

Quality Control for the IRB 1600 / IRB 4600 Cable Harness Range

Cable harness assemblies for the IRB 1600 and IRB 4600 present specific test challenges due to the composite nature of the bundle — signal conductors, 24V brake circuits, motor power lines, and encoder differential pairs are routed in close proximity, requiring isolation verification between each circuit class. DriveKNMS applies the following test protocol to all harness assemblies prior to dispatch:

Continuity verification is performed on each conductor using a four-wire Kelvin measurement to detect high-resistance joints at crimp terminations. Insulation resistance testing is conducted at 500V DC between all conductor groups and the outer shield, with a minimum acceptance threshold of 100 MΩ. Connector seating and locking mechanism integrity is verified by tactile inspection and pull-force test on each M23 circular connector. For assemblies with integrated DeviceNet or ProfiNet signal pairs, characteristic impedance is verified using a TDR (Time Domain Reflectometer) to confirm the 120 Ω termination specification. Assemblies that fail any single test parameter are quarantined and not returned to stock.