Heavy-Duty Motor Control Solution — Allen-Bradley 100-D420EA00 | MCS-D Series
Where This Product Is Used
The Allen-Bradley 100-D420EA00 is a 420 A IEC-rated MCS-D series contactor engineered for demanding motor control and power switching applications across heavy industrial environments. Typical deployment sites include:
- Steel mills & metal processing plants — main drive contactors for rolling mills, furnace blowers, and cooling fans
- Mining & mineral processing — crusher drives, conveyor belt starters, and pump motor control panels
- Water & wastewater treatment — high-current pump stations, aerator drives, and lift-station MCC buckets
- Oil & gas upstream/midstream — compressor motor starters, pipeline pump control, and wellhead automation panels
- Cement & aggregate production — kiln drive panels, ball mill starters, and raw-material conveyor MCCs
- Marine & offshore platforms — thruster motor control, ballast pump panels, and HVAC compressor starters
- Power generation & utilities — auxiliary motor control centers, cooling tower fan drives, and transformer cooling pump panels
- Pulp & paper mills — refiner drives, stock pump starters, and winder motor control
Technical Specifications
| Parameter | Value |
|---|---|
| Manufacturer | Allen-Bradley (Rockwell Automation) |
| Part Number | 100-D420EA00 |
| Series | MCS-D (IEC Contactor) |
| Rated Operational Current (Ie) | 420 A |
| Standard | IEC 60947-4-1 |
| Utilization Category | AC-3 / AC-4 |
| Coil Voltage | Per suffix code — confirm with EA00 coil variant |
| Poles | 3-pole main contacts |
| Auxiliary Contacts | 1 NO + 1 NC (standard integral) |
| Mounting | DIN rail / panel mount |
| Enclosure Rating | Open type (IP00) — requires enclosure |
| Operating Temperature | -25 °C to +60 °C |
| Weight (approx.) | 250 g |
| Compatible Overload Relay | 193-series / 592-series E300/E200 overloads |
Always verify coil voltage and auxiliary contact configuration against your panel BOM before ordering.
Why Engineers Specify This Model
- IEC 60947-4-1 compliance — globally accepted rating framework, simplifying CE marking and export documentation
- 420 A continuous rating — handles large induction motors up to ~250 kW / 400 V AC-3 without derating
- MCS-D modular architecture — accepts plug-in auxiliary contact blocks, surge suppressors, and mechanical interlocks without rewiring
- Rockwell ecosystem integration — native compatibility with Allen-Bradley MCCs, PLC I/O modules, and E300 electronic overload relays
- Long electrical life — silver-alloy main contacts rated for millions of AC-3 operations, reducing planned maintenance intervals
- Compact footprint for frame size — optimized for space-constrained MCC bucket designs
Complete System Bill of Materials
For a fully coordinated motor starter assembly using the 100-D420EA00, engineers typically specify:
- 100-D420EA00 — Main contactor (this unit)
- 193-EC1 / 193-EC2 series — E200/E300 electronic overload relay (select current range to match motor FLA)
- 100-D auxiliary contact block — e.g., 100-D11 (1 NO + 1 NC add-on)
- 100-DM series mechanical interlock — for reversing or star-delta starter configurations
- 1492-series terminal blocks — Allen-Bradley DIN rail terminals for control wiring
- 140M / 140G series motor circuit protector — upstream short-circuit protection coordinated with 420 A frame
- Surge suppressor module — 100-FSC series varistor suppressor for coil transient protection
Contact Konmask for complete coordinated starter BOM quotations.
Compliance & Industry Standards
- IEC 60947-4-1 — Low-voltage switchgear and controlgear: electromechanical contactors and motor starters
- UL 508 — Industrial Control Equipment (where applicable per variant)
- CE Marking — EU Low Voltage Directive 2014/35/EU
- RoHS Compliant — Restriction of Hazardous Substances
- ATEX / IECEx — consult factory for hazardous-area variants
- Rockwell Automation Product Certification — verified via RA Product Compatibility & Download Center (PCDC)
Quality Assurance & Sourcing
Konmask.com sources Allen-Bradley components exclusively through verified industrial distribution channels. Every unit shipped undergoes the following quality checks:
- Visual inspection of housing, contact surfaces, and coil terminals
- Label and date-code verification against Rockwell Automation packaging standards
- Continuity and insulation resistance spot-check on sampled lots
- Anti-counterfeit hologram and traceability code validation
- Secure ESD-safe packaging for transit protection
All products are supplied with original manufacturer documentation where available. Certificates of conformance (CoC) available upon request.
How to Source This Part
- Add to cart — place your order directly on Konmask.com with secure checkout
- Request a quote — for volume orders (>5 units) or project BOM quotations, email support@konmask.com
- Lead time — in-stock units ship within 1–3 business days; ex-stock orders confirmed at time of inquiry
- Export & customs — Konmask supports international shipments with full commercial invoice, packing list, and HS code documentation (HS: 8536.49)
- Payment — T/T bank transfer, credit card, and trade-term arrangements available for qualified accounts
Application-Specific FAQ
Q: What is the maximum motor power this contactor can switch at 400 V AC-3?
A: At 400 V AC-3, the 420 A Ie rating corresponds to approximately 200–250 kW depending on motor power factor and duty cycle. Always verify against the full coordination table in Rockwell publication 100-TD013.
Q: Can the 100-D420EA00 be used in a reversing starter configuration?
A: Yes. Use two 100-D420EA00 contactors with a 100-DM series mechanical interlock and appropriate electrical interlock wiring to prevent simultaneous energization.
Q: Is this contactor compatible with Rockwell’s E300 electronic overload relay?
A: Yes. The MCS-D frame is designed for direct plug-in mounting with the 193-EC series E300 overload relays, eliminating separate wiring between contactor and overload.
Q: What coil voltage does the EA00 suffix indicate?
A: The EA00 suffix designates the coil voltage variant. Please confirm the exact coil voltage specification with Konmask before ordering if your control circuit voltage differs from standard 24 V DC or 110/220 V AC options.
Q: Do you supply the complete coordinated starter assembly?
A: Yes. Konmask can supply fully coordinated motor starter assemblies including contactor, overload relay, MCP, and auxiliary components. Contact us with your motor nameplate data for a complete BOM and quotation.
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