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- Triconex
- 8305
- Power Supply Module 120 AC/DC PLC ASSY 7400127-010
- USA
- 203×127×51 mm
- 2.25kg
- Xiamen, China
- New & In Stock
- T/T, PayPal, Western Union
- 1 Year
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Our advantage
Global Logistics
We have a 10-year logistics and express cooperation agreement, so our products can be shipped to any place in the world.
Brand new and original
Our products are imported in bulk from the place of origin. Because of the cooperative relationship, our products are all original and 100% new.
24-hour service
We provide 7*24 hours service to our customers. We will be there whenever you need us.
Price advantage
All our products are priced very favorably because we have our own warehouse and supply.
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Triconex 8305A Overview
Product Introduction
The Triconex 8305A is a high‑availability triple‑redundant (TMR) power supply module crafted for mission‑critical safety systems. Engineered to deliver seamless, uninterrupted 24 V DC power even during component failure, it supports emergency safety applications—such as emergency shutdown (ESD), fire & gas detection, and turbine trip systems—without disruption. The module features hot‑swappable design and high environmental resilience, enabling maintenance without interrupting operation.
Brand & Series
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Brand: (omitted per instruction)
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Series: TMR Power Supply Modules—the power backbone for fault‑tolerant safety logic platforms.
Technical Specifications
Key specifications summarized with dimensions and weight:
| Parameter | Specification |
|---|---|
| Model | 8305A |
| Type | Triple‑Redundant Power Supply Module (TMR) |
| Input Voltage | 85–264 V AC or 120–350 V DC |
| Output Voltage | 24 V DC (±1%) |
| Output Current | Approx. 10–20 A (shared across modules) |
| Redundancy Style | N+1 or true triple redundancy with majority voting |
| Efficiency | ~92% at full load |
| MTBF | > 500,000 hours |
| Operating Temp. | –40 °C to +70 °C (some variants up to +85 °C) |
| Cooling | Natural convection (fanless) |
| Certifications | SIL 3 (IEC 61508/61511), ATEX/IECEx Zone 2, FM Class I Div 2 |
| Dimensions (H×W×D) | ~132 × 60 × 200 mm or up to 203×127×51 mm (based on source) |
| Weight | Approx. 2.0–2.25 kg (2 kg to 2.25 kg range) |
Applications
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Uninterrupted power for ESD or fire system logic in oil & gas platforms
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Safety-critical backup power in chemical processing and power generation
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Redundant supply for turbine trip or SCRAM logic in power plants
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Reliable supply within packaged SIS systems, even under grid fluctuation
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Hazardous area deployment thanks to ATEX/IECEx certifications
Product Advantages
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True fault resilience—even if one power path fails, the system remains powered without interruption.
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Hot‑swappable design allows replacements while the system is live, avoiding downtime.
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High efficiency and MTBF, reducing thermal stress and maintenance needs.
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Wide voltage input range protects against grid instability.
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Industrial ruggedness—operates across a wide temperature span; no moving parts to fail.
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Extensive certifications ensure suitability in explosion‑risk or SIL‑graded environments.
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Compact footprint yet capable of top-tier safety power delivery.
Related Models — Same Series (TMR Power Supplies)
Below are five sibling variants or related modules within the TMR power supply family:
| Model | Description | Size (approx.) | Weight (kg) | Notes |
|---|---|---|---|---|
| 8305A | Triple-redundant 24 V DC power module | ~132×60×200 mm or larger | ~2–2.25 kg | Baseline model |
| 8305 | Earlier non‑redundant or less robust variant | ~203×127×51 mm | ~2 kg | Less redundancy, similar role |
| 8310 | High‑density power module | Medium–large cabinet | ~2–3 kg | For rack-heavy deployments |
| 8312 | 12-slot chassis housing TMR modules | Rack-mount frame | varies | Chassis for organizing multiple supply units |
| 3805E | Communication power interface module | Compact module | ~1–2 kg | Supplies power for bus or HMI comm interfaces |
Other Popular Models — Same Brand (Non‑TMR Power Modules)
Here are five other frequently used modules from the same product family:
| Model | Series / Type | Size (approx.) | Weight (kg) | Function |
|---|---|---|---|---|
| 8300A | Main power module for logic CPU | Medium rack module | ~2 kg | Provides power to CPU and logic modules |
| 3008 | SIL 3 processor logic module | Rack insert | ~2–3 kg | Core logic CPU module |
| 3503E | Analog output module | Slim rack card | ~1–2 kg | Outputs analog actuation signals |
| 3704E | High-density analog input module | Compact rack card | ~1–2 kg | Multiple analog inputs |
| 4351B | Safety network gateway module | Compact rack module | ~2 kg | Redundant communications interface |
FAQ (10 Questions & Answers)
Each Q&A concludes with a blank line:
Q1: What does “TMR” mean in this module?
A1: TMR stands for Triple‑Module Redundancy—three independent power paths share the load and vote to maintain output. If one fails, the other two keep supplying power seamlessly.
Q2: Can I replace the module while live?
A2: Yes. It’s designed for hot‑swapping, enabling module replacement without shutting down safety systems.
Q3: What environments can it endure?
A3: Rated from –40 °C to +70 °C, and some versions up to +85 °C—ideal for process skids, offshore, or manufacturing.
Q4: What kind of input voltages does it accept?
A4: Wide range—from 85 to 264 V AC, or 120 to 350 V DC—tolerating supply fluctuations gracefully.
Q5: Are there certifications for hazardous areas?
A5: Yes—SIL 3, ATEX/IECEx Zone 2, and FM Class I Div 2, ensuring compliance in explosive or high-risk zones.
Q6: How compact is the module?
A6: Typical size: ~132×60×200 mm, though some variants measure around 203×127×51 mm, depending on design.
Q7: What is its weight?
A7: Approximately 2.0–2.25 kg, making it lightweight and easy to install or replace.
Q8: How efficient is it?
A8: Around 92% efficiency at full load, ensuring minimal heat dissipation and energy loss.
Q9: How reliable is it?
A9: Very reliable—with an MTBF over 500,000 hours, meaning years of continuous service without failure.
Q10: What outputs can it support?
A10: It provides stable 24 V DC at up to 10–20 A, sufficient for operating logic and I/O modules in safety systems.
Authenticity guarantee
All product specifications are original and authentic imported products. We have an annual sales volume of 300 million yuan, and we only produce original and authentic products. All customers who cooperate with us directly online can enjoy low discounts.
Free warehouse
We have a complete range of product models, 80% of conventional models are in stock, and we have established channels in Asia, Africa, North America, South America, and Europe, effectively shortening the order processing time and satisfying customers in a timely manner.
Technical Team
Fast delivery. Spot goods can be shipped on the same day, and the delivery time transaction is 20% faster than that of peers on average, with a delivery time accuracy rate of 99%.
Thoughtful after-sales service
24-hour after-sales service guarantee team, professional and standardized management service system.