Product details
Honeywell 2MLR-DC42 Power Supply Module 24VDC Input
The Honeywell 2MLR-DC42 Power Supply Module converts 24VDC input to stable 5VDC output. It delivers 37.5W at 55°C with 65% efficiency. Features built-in fuses, RUN contact relay, and overcurrent protection. Compact design with LED status indicator. Ideal for industrial control systems requiring reliable DC power.
Model Configuration Tree
- 2MLR (Power Supply Series)
- DC42 (Specific Model)
- DC – DC input type
- 42 – 24VDC input / 5VDC output version
- DC42 (Specific Model)
Technical Specifications
- Brand: Honeywell
- Model: 2MLR-DC42
- Type: Power Supply Module
- Rated Input Voltage: 24 VDC
- Input Voltage Range: 19.2 ~ 28.8 VDC
- Inrush Current: 80A peak and lower
- Efficiency: 65% or higher
- Input Fuse: Built-in, non-user replaceable
- AC Fuse: 250V / 3.15A Time-lag UL approved
- DC Fuse: 125V / 10A Time-lag UL approved
- Instantaneous Interruption: Within 20 ms
- Output Voltage: 5 VDC (±2%)
- Output Current: 7.5A
- Output Power: 37.5W @ 55°C
- Over Current Protection: 9.0A ~ 17.0A
- RUN Contact Rating: 24VDC, 0.5A
- Min Switching Load: 5VDC, 1 mA
- Response Time: Off→On ≤10ms, On→Off ≤12ms
- Mechanical Life: 20+ million cycles
- Electrical Life: 100,000+ cycles
- Status Display: Green LED for normal output
- Cable Size: 0.75 ~ 2 mm²
- Clamped Terminal: RAV1.25-3.5, RAV2-3.5
- Dimensions: 55 x 95 x 110 mm
- Weight: 417g
Package Contents
- 1x 2MLR-DC42 Power Supply Module
- 1x User manual
- 1x Warranty card
- Terminal blocks included
Installation Basics
- Mount: Secure on DIN rail or panel
- Wire: Use 0.75-2mm² cable
- Connect input: 19.2-28.8 VDC supply
- Connect output: 5VDC to load
- RUN contact: Monitor module status
- Check LED: Green = normal operation
Key Features
- Wide input range: 19.2-28.8VDC flexible
- Dual fuses: AC and DC protection built-in
- RUN relay: Remote status monitoring
- Overcurrent protection: 9-17A trip range
- Fast response: 10ms max switching
- Compact: Space-saving 55mm width
- LED indicator: Quick visual check
Typical Applications
- Power Honeywell controllers and I/O
- Industrial automation panels
- Process control systems
- 24VDC to 5VDC conversion
- Backplane power supply
Protection Features
- Input fuses: Non-replaceable for safety
- Overcurrent: Automatic shutdown 9-17A
- Interruption tolerance: 20ms ride-through
- Thermal: Derated power at high temp
Environmental & Compliance
- Operating Temp: 0°C to +55°C
- Storage Temp: -40°C to +85°C
- Humidity: 5% to 95% non-condensing
- Certifications: CE, UL, RoHS
- Fuses: UL approved time-lag type
Warranty & Support
- 12-month warranty against defects
- Technical support available
- Repair or replacement coverage
Shipping Information
- Couriers: FedEx, UPS, DHL
- Tracking: Provided upon dispatch
- Global: Fast worldwide delivery
Professional FAQ
- Q: Why are there both AC and DC fuses in a DC-input module?
- A: The 2MLR-DC42 has dual protection. The AC fuse protects internal circuits if AC is mistakenly connected. The DC fuse protects normal DC operation.
- Q: Can I replace the internal fuses myself?
- A: No. Fuses are built-in and not user-replaceable. Return the unit for service if fuses blow. This ensures safety and proper repair.
- Q: What is the RUN contact used for?
- A: The RUN relay indicates normal output. Connect to a PLC or alarm to monitor power supply status remotely. Closes when output is normal.
- Purchase Guide: I need a 5VDC power supply for Honeywell I/O. Is 2MLR-DC42 compatible?
- A: Yes. The 2MLR-DC42 provides 5VDC at 7.5A, perfect for many Honeywell modules. Check your total current draw before ordering.
- Experience-based Q&A
: Our input voltage sometimes drops to 18V. Will this module work? - A: The input range is 19.2-28.8VDC. Below 19.2V, output may drop or shut down. Use a regulated 24VDC supply or voltage booster for stable operation.
Contact Information
- 📧 sales@powergearx.com
- 📱 +86 18030005825 (WhatsApp)
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Original Source: https://www.powergearx.com/
Michael Turner –
We ordered the Honeywell 2MLR-DC42 power supply module as a replacement unit for a control cabinet upgrade in our manufacturing facility. The product arrived factory-sealed and clearly brand new. Installation was straightforward, and the 24VDC to 5VDC conversion has been extremely stable in continuous operation. We’ve been running it on a PLC system supporting packaging equipment, and performance has been flawless. PowerGearX handled the order professionally, confirmed stock quickly, and shipped it out faster than expected. This saved us significant downtime. Communication was clear and responsive throughout the process. Would definitely trust this supplier again for critical control components.