Products Description
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Product Overview – Triconex 8305A Power Supply Module
The Triconex 8305A is a robust, high-reliability power supply module designed specifically for the Tricon fault-tolerant safety system. As a critical component within Tricon’s Triple Modular Redundancy (TMR) architecture, the 8305A ensures uninterrupted power delivery to all modules in the chassis. Installed in pairs within the main, expansion, or remote (RXM) chassis, each module operates independently with full load capacity, allowing for complete redundancy and online replacement without system disruption.
The 8305A supports dual-redundant operation, enabling the system to continue functioning if one power supply fails. Built-in diagnostics and front-panel indicators alert users to over-temperature, battery issues, or module faults, making it ideal for safety-critical environments.
Technical Specifications
| Parameter | Specification |
|---|---|
| Model Number | 8305A |
| Product Type | Power Supply Module |
| Supported Chassis | Main / Expansion / RXM Chassis |
| Nominal Input Voltage | 24 VDC |
| Input Voltage Range (DC) | 22 – 31 VDC |
| Output Voltage | 6.5 VDC ±1% |
| Output Power Capacity | 175 W @ 60°C ambient |
| Output Current | 27 A |
| Output Hold Time | Minimum 2.8 ms to 0V |
| Fuse Rating | 15 A, time-delay |
| Diagnostic Indicators | PASS, FAULT, ALARM, TEMP, BAT LOW |
| Over-temperature Trip | >83°C internal, ~60°C ambient |
| Isolation | >1000 VAC or 1500 VDC (Input to Output) |
| Alarm Contacts | NO/NC relay (120 VAC @ 1 A) |
| Dimensions (W x H x D) | 63 mm x 178 mm x 394 mm |
| Weight | 3.3 kg |
Key Features
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Dual-redundant configuration: either module supports full chassis power
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Compatible with all Tricon chassis types (main, expansion, RXM)
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Hot-swappable design for online replacement
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Built-in diagnostics and fault detection
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Comprehensive LED indicators for visual status monitoring
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Wide DC input voltage range for flexible installations
Advantages
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Uninterrupted Power Delivery: Ensures system reliability even during power module failures.
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Hot-Swappability: Modules can be replaced online without process interruption.
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Safety Compliance: Meets international standards including IEC 61508 SIL 3, ATEX Zone 2.
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Diagnostic Capability: Preventive alerts for over-temperature and low battery conditions.
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High Availability: Maintains full operation under extreme environmental conditions.
Applications
The Triconex 8305A is ideally suited for high-integrity, safety-critical industrial automation environments, including:
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Emergency Shutdown Systems (ESD)
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Fire and Gas (F&G) Detection Systems
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Burner Management Systems (BMS)
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Turbine Control Systems
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Nuclear Safety Applications
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Offshore Platforms
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Refineries and Petrochemical Plants
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Power Generation Facilities
Latest News or Report Title
“Triconex Expands Redundant Power Platform with Enhanced 8305A Module for High-Reliability Industrial Applications”
(Industrial Safety Journal, March 2025)
Related Models in the Same Series
| Model Number | Description | Output Power | Voltage Type | Dimensions (mm) | Weight |
|---|---|---|---|---|---|
| 8310 | 120 VAC/VDC Power Module | 175 W | AC/DC | 63 x 178 x 394 | 3.3 kg |
| 8311 | 24 VDC Power Module | 175 W | DC | 63 x 178 x 394 | 3.3 kg |
| 8312 | 230 VAC Power Module | 175 W | AC | 63 x 178 x 394 | 3.3 kg |
| 3008 | Main Processor Module | N/A | N/A | 63 x 178 x 394 | 2.1 kg |
| 8110 | Main Chassis | N/A | N/A | 483 x 578 x 451 | 24.5 kg |
| 8112 | Remote Expansion Chassis (RXM) | N/A | N/A | 483 x 578 x 451 | 24.5 kg |
Popular Triconex Models
| Model Number | Description | Type | Dimensions (mm) | Weight |
|---|---|---|---|---|
| 3008 | Main Processor Module | Controller | 63 x 178 x 394 | 2.1 kg |
| 8110 | High-Density Main Chassis | Chassis | 483 x 578 x 451 | 24.5 kg |
| 3805E | Analog Output Module, 4-20 mA | Analog Output | 63 x 178 x 394 | 2.5 kg |
| 3604E | 24 VDC Digital Output Module | Digital Output | 63 x 178 x 394 | 2.5 kg |
| 3501E | 115 VAC/VDC Digital Input Module | Digital Input | 63 x 178 x 394 | 2.5 kg |
| 3706A | Thermocouple Input Module | Analog Input | 63 x 178 x 394 | 2.5 kg |
FAQ
FAQ – Triconex 8305A Power Supply Module
Q1: Can the 8305A be replaced while the system is running?
A1: Yes, it supports online hot-swappable replacement without disrupting operations.
Q2: Is the 8305A power module certified for SIL 3 safety applications?
A2: Yes, it complies with IEC 61508 up to SIL 3 when used in a certified Tricon system.
Q3: What happens if one of the dual power modules fails?
A3: The remaining power module can fully power the entire chassis, ensuring no interruption.
Q4: What diagnostics does the 8305A provide?
A4: It offers front-panel LEDs for PASS, FAULT, ALARM, TEMP, and BAT LOW, enabling quick fault detection.
Q5: Can the 8305A operate in harsh environments?
A5: Yes, it is designed for 0–60°C ambient temperatures and withstands shock, vibration, and humidity as per IEC standards.
Q6: Does the module have isolation between input and output?
A6: Yes, the module provides >1000 VAC or 1500 VDC isolation between input and output.
Q7: What is the minimum power hold time during outages?
A7: The 8305A can hold output power for at least 2.8 ms after input loss.
Q8: What voltage input does the 8305A support?
A8: It supports a nominal input of 24 VDC with an operating range of 22 to 31 VDC.
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Packing & Delivery
We will use wear-resistant cartons to seal the boxes, and take photos for your confirmation before sealing. We will pack the boxes only after confirmation.
For express delivery, we will use DHL, UPS, TNT, FedEx and EMS.
Please rest assured that we have a deep cooperation with express delivery companies and can ensure that your goods are delivered to you in good condition.
