Product Details
Configured for power distribution and circuit protection in Honeywell DCS enclosures, the Honeywell 51430902-100 (51430902 Breaker Box Assembly) provides direct physical/electrical execution for 24 VDC and AC power bus feed isolation.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | 51430902-100 |
| Brand | Honeywell |
| Origin | USA |
| Weight | Approx. 1.20 kg |
| Dimensions | Standard DCS cabinet breaker panel assembly |
| Operating Temp | 0 deg C to +60 deg C |
| Power Consumption | Passive power distribution chassis load |
| Module Type | Breaker Box Assembly / Power Distribution Unit |
| System Compatibility | Honeywell TDC 3000 / Experion PKS Cabinet |
| Bus Voltage Rating | 24 VDC / 120 VAC / 230 VAC distribution rails |
| Circuit Protection | Multi-channel thermal-magnetic circuit breakers |
4-20 mA HART Loop Protocol and Channel-to-Channel Isolation
The 51430902-100 breaker box assembly isolates individual cabinet power branches to maintain channel-to-channel isolation across distributed instrument racks. By filtering incoming line noise and suppressing high-voltage switching transients at the power entry point, the assembly prevents electrical interference from coupling into low-voltage analog channels executing 4-20 mA HART loop protocol telemetry across field I/O racks.
Frequently Asked Questions
Q: What is the primary operational role of the 51430902-100 breaker box assembly?
A: It acts as the primary power distribution point inside the DCS cabinet, providing individual circuit breaker protection and power switching for system racks, controllers, and I/O files.
Q: Can individual circuit breakers on the 51430902-100 assembly be reset or toggled while the cabinet is powered?
A: Yes, branch breakers can be manually operated to isolate specific system slots or I/O racks during field maintenance without interrupting main cabinet supply power.
Q: How is chassis grounding established for the assembly?
A: The metal enclosure features dedicated heavy-gauge grounding studs that connect directly to the main cabinet protective earth (PE) bus bar.
Field Installation Guidelines
- Isolate primary utility power feeds to the cabinet before mounting or wiring the breaker box assembly.
- Connect main protective earth ground leads to the frame grounding stud before terminating 24 VDC or AC power buses.
- Ensure all screw terminals for input power feed cables are torqued securely to prevent resistive heating under full load current.
- Label all outgoing branch circuits clearly to match cabinet wiring schematics and facilitate safe field maintenance.
Additional Information
- 100% Genuine Parts: All products are original and authentic, ensuring reliable industrial performance.
- 30-Day Refund Guarantee: Return any in-stock item within 30 days in original, unopened packaging for a full refund (excluding shipping and fees).
- 12-Month Warranty: Covers defects in materials or workmanship; excludes misuse, normal wear, or unauthorized modifications.
- Worldwide Shipping: We ship via USPS, UPS, FedEx, and DHL. Delivery times vary by country and may be subject to customs or import fees.
- Support & Contact: Technical and warranty assistance is available anytime. Contact us here: Contact.
- Purchase Guidance: Check product specifications and compatibility carefully before ordering to ensure proper application.
Tech & Buying Guide
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