Siemens 6GK5602-0BA10-2AA3 Network Security Module – Obsolete SCALANCE S602 Spare Part

Technical Dossier

Product Details And Specifications

Siemens 6GK5602-0BA10-2AA3 Network Security Module – Obsolete SCALANCE S602 Spare Part

When a SCALANCE S602 security module fails in a running production environment, the consequences extend far beyond a single device replacement. This unit sits at the perimeter of your industrial network, enforcing VPN tunnels, stateful packet inspection, and zone-based access control between the office IT layer and the shop-floor OT layer. Without it, the entire PROFINET segment it protects either goes offline or is exposed without firewall enforcement — neither outcome is acceptable in a regulated manufacturing environment.

Replacing a legacy Siemens SCALANCE S602 with a current-generation SCALANCE S615 or S627-2M is not a plug-and-swap exercise. It requires new firmware architecture, reconfiguration of all VPN peers, updated STEP 7 or TIA Portal project files, re-validation of network segmentation, and in many cases a full production shutdown for commissioning. Engineering costs alone routinely exceed USD 80,000–200,000 for a mid-size plant. Procurement of a single 6GK5602-0BA10-2AA3 from verified stock eliminates that exposure entirely.

DriveKNMS maintains verified stock of this discontinued module. Inventory is finite and not replenishable from the OEM supply chain.

Technical Specifications

Solving the Discontinued Hardware Crisis

The SCALANCE S602 was deployed extensively in industrial plants built between 2005 and 2015, particularly in automotive body shops, pharmaceutical batch processing lines, and food and beverage packaging facilities. These installations were designed around Siemens SIMATIC S7-300 and S7-400 controllers — platforms that themselves remain in extended support but are no longer in active development. The S602 was the designated security gateway for these cells, and its configuration is tightly coupled to the surrounding network topology.

Siemens formally discontinued the SCALANCE S602 product line. Replacement with a current-generation device is not a straightforward migration. The Security Configuration Tool (SCT) project files used to manage S602 policies are not forward-compatible with the newer SINEMA-based management stack without manual re-engineering. For a plant running 20–40 protected cells, each requiring individual VPN peer reconfiguration, the migration project represents months of engineering time and a series of planned production outages.

For plant managers operating under capital expenditure constraints or facing a 3–5 year runway before a full system modernization, maintaining a buffer stock of 6GK5602-0BA10-2AA3 units is the lowest-risk continuity strategy available. A single unit on the shelf converts an unplanned emergency shutdown into a 30-minute swap.

How to extend your automation asset life by 5–10 years with targeted spare part management:

• Identify single points of failure. Map every network security node in your OT environment. Devices like the SCALANCE S602 that sit between production cells and the corporate network are high-consequence failure points with no manual bypass.
• Establish a minimum buffer stock policy. For discontinued modules with no drop-in OEM successor, a minimum of 2–3 units per plant site is a defensible maintenance standard. The cost of three 6GK5602-0BA10-2AA3 units is a fraction of one hour of unplanned downtime on a high-throughput line.
• Document firmware versions in use. Before storing spare units, record the firmware version running on your active devices. Ensure spares are either pre-loaded with matching firmware or that the upgrade path is documented and tested offline.
• Negotiate long-term supply agreements with specialist distributors. OEM channels are closed. Independent distributors with verified stock — and documented sourcing chains — are the only reliable supply path for discontinued Siemens industrial networking hardware.
• Schedule proactive replacement cycles. Electrolytic capacitors in devices of this generation have a finite service life. Units that have been in continuous service for 10+ years should be treated as candidates for proactive replacement, not run-to-failure.

Condition & Reliability Assurance

Discontinued hardware sourced outside the OEM channel carries inherent risk if not properly evaluated. DriveKNMS applies a 5-step inspection protocol to all SCALANCE S602 units before shipment:

1. Visual and mechanical inspection. Housing integrity, DIN rail clip condition, port labeling, and connector pin examination under magnification. Units with physical damage, corrosion on RJ45 pins, or compromised housing are rejected.
2. Electrolytic capacitor assessment. Capacitor bulging, electrolyte leakage, and ESR deviation are primary failure modes in hardware of this age. Each unit is inspected for visible capacitor degradation. Units showing any sign of capacitor stress are quarantined.
3. Firmware version verification. The firmware version present on each unit is recorded and disclosed to the buyer prior to shipment. No firmware modifications are made without explicit customer instruction.
4. Power-on functional test. Each unit is powered at rated 24 V DC and verified to complete its boot sequence, illuminate status LEDs correctly, and respond to network interface activity.
5. Packaging and ESD protection. Units are packed in anti-static bags with foam cushioning. Shipment documentation includes the unit serial number, inspection date, and technician reference.

Key Features for System Maintenance

• Drop-in replacement. The 6GK5602-0BA10-2AA3 is a direct hardware substitute for any existing SCALANCE S602 installation. Physical dimensions, DIN rail mounting, and port layout are identical to all S602 variants in the same housing generation.
• No reprogramming of connected devices required. The security policy and VPN configuration reside in the SCT project file, not in the connected PLCs or HMIs. Replacing the hardware unit and restoring the SCT configuration does not require any changes to SIMATIC S7 programs or HMI projects.
• Avoids engineering reconstruction costs. A hardware swap using an identical replacement unit eliminates the need for network re-segmentation, firewall rule re-validation, or VPN peer renegotiation with remote sites — all of which are billable engineering activities that accompany a platform migration.
• Maintains existing compliance posture. Plants operating under IEC 62443, NERC CIP, or internal OT security frameworks that have already validated their S602-based architecture do not need to re-validate when replacing like-for-like hardware.

FAQ

What warranty applies to discontinued SCALANCE S602 units?
DriveKNMS provides a 90-day functional warranty on all tested units. The warranty covers failure to power on or failure to pass the same functional tests applied during pre-shipment inspection. It does not cover damage resulting from incorrect installation or operation outside rated parameters.

How do I confirm the unit is genuine and not counterfeit?
Each unit is supplied with its original Siemens product label intact, including the MLFB order number, serial number, and manufacturing date code. We do not supply units with removed, altered, or reprinted labels. Buyers are encouraged to verify serial numbers against Siemens' product identification resources.

Should I purchase more than one unit?
For any installation where the SCALANCE S602 is a single point of failure — which is the typical deployment — holding at least one cold spare on-site is the minimum prudent position. For multi-cell installations or plants with long logistics lead times, two to three units is a more defensible buffer. Available stock is not guaranteed to remain available; this product line will not be restocked once current inventory is exhausted.

Can you supply units pre-loaded with a specific firmware version?
Firmware version matching can be discussed on a case-by-case basis. Contact us with your current firmware version before placing an order.

© 2026 DriveKNMS. All trademarks belong to their respective owners. Specifications are for reference only and subject to change without notice. Verify all parameters against official documentation before installation.