Process Control & DCS Solution — Emerson KC3011X1-BA1 | Contactor Relay Series
Where This Product Is Used
The Emerson KC3011X1-BA1 (Part No. 12P6749X012, Series VE4035S2B5) Contactor Relay is engineered for demanding industrial environments where reliable signal switching and process interlock control are critical. Typical deployment scenarios include:
- Oil & Gas Processing Plants — Emergency shutdown (ESD) systems, compressor control panels, and wellhead automation
- Chemical & Petrochemical Facilities — Reactor interlock circuits, valve actuator control, and safety instrumented systems (SIS)
- Power Generation — Turbine control systems, boiler management, and load-shedding relay logic
- Pulp & Paper / Water Treatment — Motor control centers (MCC), pump sequencing, and process interlock panels
- Distributed Control Systems (DCS) — I/O marshalling cabinets, field junction boxes, and Emerson DeltaV / Ovation platform integration
Technical Specifications
| Manufacturer | Emerson (Fisher Controls / Rosemount) |
| Part Number | KC3011X1-BA1 |
| Cross-Reference | 12P6749X012 / VE4035S2B5 |
| Product Type | Contactor Relay |
| Series | VE4035S2B5 |
| Weight | 180 g (approx.) |
| Condition | New / Surplus New |
| Compliance | CE, RoHS (verify with datasheet) |
Why Engineers Specify This Model
- OEM-Grade Reliability — Manufactured to Emerson’s stringent quality standards for continuous-duty industrial relay applications
- Multi-Reference Compatibility — Identified by three cross-reference numbers (KC3011X1-BA1 / 12P6749X012 / VE4035S2B5), simplifying procurement across legacy and current BOM revisions
- DCS-Ready Design — Optimized for integration into Emerson DeltaV, Ovation, and third-party DCS marshalling architectures
- Compact Form Factor — Panel-mount design minimizes cabinet footprint in space-constrained control rooms
- Long Service Life — Rated for high-cycle switching in process interlock and safety relay applications
Complete System Bill of Materials
This relay is commonly specified alongside the following Emerson and compatible components:
- Emerson DeltaV I/O Cards (Series 2 / CHARM)
- Emerson VE4001S2T1B2 / VE4002 Series I/O Modules
- Emerson 12P6749 Series Relay Bases & Sockets
- Emerson Fisher 249 / 2500 Series Transmitters
- Terminal blocks: Phoenix Contact or Weidmüller DIN-rail types
- 24 VDC panel power supplies (Emerson or equivalent)
Compliance & Industry Standards
- Designed in accordance with IEC 61511 (Functional Safety — SIS for Process Industry)
- Compatible with IEC 61131 PLC/DCS control architectures
- Suitable for use in ATEX / IECEx Zone 2 classified areas when installed per Emerson guidelines (verify with project datasheet)
- CE marking applicable; RoHS compliance — confirm with current Emerson product documentation
Quality Assurance & Sourcing
At Konmask.com, every Emerson component is sourced through verified industrial supply channels:
- ✔ 100% authentic Emerson OEM parts — no counterfeit risk
- ✔ Visual inspection and packaging integrity check prior to dispatch
- ✔ Traceability documentation available on request (lot number, date code)
- ✔ Secure anti-static packaging for relay and electronic components
- ✔ Global shipping with DHL / FedEx Express; export documentation provided
How to Source This Part
Ready to order the Emerson KC3011X1-BA1 Contactor Relay? Here’s how to proceed:
- Add to Cart — Click “Buy Now” or “Add to Cart” above for immediate checkout
- Request a Quote — For bulk orders (>5 units) or project BOM pricing, email support@konmask.com
- Lead Time — In-stock units ship within 1–3 business days; ex-stock availability confirmed at order
- Export & Customs — We handle HS code classification, commercial invoices, and packing lists for international shipments
Application-Specific FAQ
Q: Is the KC3011X1-BA1 a direct replacement for 12P6749X012?
A: Yes. KC3011X1-BA1, 12P6749X012, and VE4035S2B5 are cross-reference identifiers for the same Emerson Contactor Relay assembly. Always verify with your plant’s BOM revision before installation.
Q: What DCS platforms is this relay compatible with?
A: This relay is designed for use within Emerson DeltaV and Ovation DCS architectures, and is also compatible with third-party DCS/PLC marshalling panels operating at standard 24 VDC control voltage.
Q: Can this be used in a Safety Instrumented System (SIS)?
A: This component may be used in SIS applications subject to your SIL verification and proof-test procedures per IEC 61511. Consult your functional safety engineer for SIL suitability assessment.
Q: Do you provide a warranty?
A: Yes. All Emerson parts sold by Konmask.com carry a 12-month warranty against manufacturing defects. Contact us within the warranty period for RMA processing.
Q: Can I order a sample unit before committing to a larger quantity?
A: Absolutely. Single-unit orders are welcome. Contact support@konmask.com for sample pricing and expedited shipping options.
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