LXLZ Note: This Product Provides Solutions for Parameter Customization And Application.
MH-25 Brake Motor Rectifier 220V AC to 99V DC Module
If you’ve been sourcing electromagnetic brake rectifiers for industrial machinery, you know how much grief a cheap or mismatched unit can cause — nuisance trips, sluggish brake response, overheating, the whole headache. The MH-25 is built for people who’ve been through that and don’t want to go through it again.
This is a compact, weld-mount power unit that takes 200/240V AC input (yellow wire) and converts it to a stable 90/108V DC output (black wire), purpose-built to energize electromagnetic brakes on motors across a wide range of industrial equipment — conveyors, hoists, packaging lines, machine tools, and more.
We manufacture this unit in four circuit configurations, so you’re not forced into a one-size-fits-all solution. Pick what your application actually needs.
Four Circuit Types — Built for Different Demands
| Type | Best For | Key Characteristic |
|---|---|---|
| Diode Type | Simple, cost-effective brake control | Fast response, no moving parts, minimal maintenance |
| Relay Type | Applications needing full-wave half-wave switching | Controlled excitation for softer brake engagement |
| Economy FET Type | Energy-saving priority applications | Reduced holding current, lower heat generation |
| Performance FET Type | High-cycle or precision braking operations | Fastest switching speed, cleanest DC output |
Practical note: For high-frequency start/stop cycles (over 60 cycles/hour), we consistently recommend the Performance FET type. The Relay type works well in standard duty cycles but the contacts do wear — factor that into your maintenance planning.
Key Specifications
- Input: AC 200 / 240V, 50/60Hz
- Output: DC 90 / 108V
- Rated Current: 1.2A
- Mounting: Weld / screw mount (fixed installation)
- Enclosure: Compact black housing with integrated aluminum heatsink plate
- Wiring: Pre-terminated yellow (input) and black (output) leads — ready to connect
- Frequency: Compatible with both 50Hz and 60Hz power supply
Why Procurement Engineers Keep Coming Back to This Unit
Aluminum heatsink integrated into the body. This isn’t an afterthought. The heat dissipation is built into the structural shell, which means the unit runs cooler under sustained load without needing external cooling hardware. Fewer failure points, longer service life.
Solid, lightweight build. The housing is rigid enough to handle vibration-heavy environments — think motor control panels on production lines or hoist enclosures — but light enough that it doesn’t add unnecessary load to your panel design.
Wiring is genuinely straightforward. Yellow in, black out. The lead lengths give you enough slack to work with standard panel layouts. Your electricians won’t be calling you to complain.
Weld-mount design. Permanent, vibration-resistant installation. Once it’s in, it stays in. This matters in applications where panel doors get slammed and machines shake.
50/60Hz dual compatibility. Sourcing for customers across different regions? This unit covers both without modification.
Typical Applications
- Electromagnetic brake motors on conveyor systems
- Hoist and crane brake circuits
- Packaging machinery stop/hold control
- CNC and machine tool spindle brake units
- Textile machinery tension and stop control
- Industrial fans and blowers with holding brake requirements
Best Practices From the Field
✔ Match the circuit type to your duty cycle first, not just the voltage. We’ve seen buyers save on unit cost by choosing Diode type, then replace them twice as often in high-cycle environments. Economy FET or Performance FET pays for itself.
✔ Check your brake coil resistance before specifying current rating. The 1.2A rating on this unit suits the majority of standard brake coils in the 200-240V class, but oversized coils may need a higher-rated unit.
✔ Mount with airflow in mind. Even with the aluminum heatsink, don’t box it in tight with zero clearance. A 20–30mm gap around the unit keeps temperatures in the safe zone.
✔ For relay-type units in outdoor or humid enclosures, request sealed housing options — relay contacts are the one vulnerability to moisture ingress over time.
✔ Label your wire colors at the panel end. Yellow = AC in, black = DC out. Simple, but on a busy panel six months later, your maintenance team will thank you.
FAQs
Can I use one unit across both 200V and 240V supply systems?
Yes. The MH-25 accepts both 200V and 240V AC input natively — no tap switching, no modification needed. The DC output adjusts accordingly between 90V and 108V, which stays within the operating range of standard electromagnetic brake coils.
What’s the difference between the Economy FET and Performance FET types — and when does it matter?
Economy FET reduces the holding current after initial brake engagement, which cuts heat and energy use — ideal for applications where the brake is held for long periods. Performance FET prioritizes switching speed and output cleanliness, better suited to rapid, repeated start/stop cycles where response time directly affects machine accuracy or safety.
What’s your MOQ and can you supply mixed types in one order?
We’re a direct manufacturer, so MOQ is flexible depending on configuration. Mixed-type orders are standard practice for distributors and OEMs. Contact us with your breakdown and we’ll confirm lead time and pricing per configuration.
Do you offer OEM labeling or custom housing colors?
Yes. For volume orders we support OEM nameplate, custom label printing, and housing color options. Reach out with your brand requirements and annual volume estimate.
How do I know which circuit type was installed in existing equipment I’m replacing?
Open the housing (carefully, power off). Diode type: you’ll see diode components only. Relay type: visible relay component with coil. FET types: transistor/FET component visible, often with a small heatsink tab. If you’re unsure, send us a photo — we’ll identify it and cross-reference the correct replacement.
Ready to discuss quantities, mixed configurations, or OEM requirements? Send us your specs — we respond within 24 hours.