LXLZ Note: This Product Provides Solutions for Parameter Customization And Application.
Universal Brake Rectifier 220V/380V ZLKS-99/170-4
If you’re sourcing brake rectifiers for industrial motors, you already know how much a bad one costs you — not just the part itself, but the downtime, the warranty claims, and the headache of chasing failures in the field. The ZLKS-99/170-4 is built for people who’ve been through that and don’t want to go through it again.
From the image, you can see two variants side by side:
- Black unit (ZLKS-99-4): INPUT 220VAC → OUTPUT 99VDC
- Red unit (ZLKS-170-4): INPUT 380VAC → OUTPUT 170VDC
Both are compact, fully potted rectifier modules designed to power the electromagnetic brake coils on AC motors — converting AC line voltage into the DC needed to engage or release the brake. Clean, direct, no fuss.
Key Specifications
| Parameter | ZLKS-99-4 | ZLKS-170-4 |
|---|---|---|
| Input Voltage | 220VAC | 380VAC |
| Output Voltage | 99VDC | 170VDC |
| Circuit Type | Diode Type / MOSFET (FET) Type | Diode Type / MOSFET (FET) Type |
| Wire Material | Pure Copper Conductor | Pure Copper Conductor |
| Housing Material | High-grade PBT | High-grade PBT |
| Braking Mode | Standard / Fast-Stop Braking | Standard / Fast-Stop Braking |
| Application | Motor Electromagnetic Brake | Motor Electromagnetic Brake |
| Model Code | ZLKS-99-4 | ZLKS-170-4 |
| QC Status | Inspected & Passed | Inspected & Passed |
Two Circuit Configurations — Pick What Your Application Needs
🔹 Diode Type (Standard)
The traditional half-wave or full-wave diode rectifier configuration. Reliable, proven, cost-effective. Works well for standard braking cycles where brake release time is not the critical factor. This is the go-to option for most general-purpose motor brake applications — hoists, conveyors, packaging lines, fans with brakes, and similar equipment.
🔹 MOSFET (FET) Type — Fast-Stop Braking
This version uses a field-effect transistor circuit to actively accelerate the brake engagement. When the motor cuts power, the FET circuit rapidly discharges the brake coil, pulling the brake in faster and stopping the load more precisely. If your customer application involves:
- CNC axes or servo-adjacent brake holding
- Vertical load applications (hoists, elevators, material lifts)
- Safety-critical stops
- High-cycle braking where heat and timing matter
…then this is the variant you should be quoting.
Why This Build Quality Matters to Your Customers
Pure Copper Wire Leads
We don’t cut corners with copper-clad aluminum (CCA). Every lead wire is pure copper, which means lower resistance, better heat handling, and no surprises when your customer’s electrician crimps or splices in the field. CCA wire fails quietly — pure copper doesn’t.
Premium PBT Housing
The enclosure is PBT (Polybutylene Terephthalate) — not generic ABS. PBT handles heat better, resists tracking and arc, and holds its shape in environments where motor cabinets run warm. You can feel the difference. Your customer’s maintenance team will notice it doesn’t warp or discolor after a year in service.
Fully Potted / Encapsulated Construction
Looking at the units in the image, the internals are fully sealed with potting compound. This isn’t just for aesthetics — it protects against:
- Vibration (motor panels vibrate, always)
- Moisture ingress
- Dust and oil mist (common in factory environments)
- Accidental contact with live components
Clear Labeling & QC Marking
Every unit ships with clear input/output labeling, wiring diagram on the body, batch/lot number, and a QC pass stamp. This matters to your buyers’ technicians — no guessing during installation, no pulling up manuals mid-job.
Typical Applications
These rectifiers are widely used across industrial motor brake systems, including:
- Overhead cranes & hoists — load holding, safe stop on power loss
- Elevators & vertical conveyors — brake must engage reliably every cycle
- CNC machine tool spindles & axes — holding brakes on servo or induction motors
- Packaging & food processing lines — quick, repeatable stops
- Mining & heavy equipment drives — demanding environments, need robust components
- HVAC fan motor brakes — stopping oversized fans safely
- Steel & aluminum processing equipment
Best Practice Notes (From Field Experience)
These aren’t just specs — they’re what separates a smooth installation from a callback.
- Match the rectifier output to your brake coil’s rated DC voltage. Running a 99VDC rectifier on a coil rated for 170VDC will give you a weak, slow-releasing brake. Running it the other way risks burning the coil.
- For vertical loads or safety applications, always specify the MOSFET (fast-stop) type. The diode type has a longer coil discharge time, which means the brake sets slower. On a hoist, that extra 200–400ms matters.
- Check your input voltage before ordering. 220V single-phase and 380V three-phase systems need different units. The color coding (black = 220V/99VDC, red = 380V/170VDC) helps in the field, but get it right at the order stage.
- Wire connection is polarity-sensitive. The label on the unit clearly marks AC input leads (red) and DC output (+ / −). Follow it. Reversed polarity won’t necessarily blow the unit immediately but will cause erratic brake behavior.
- Don’t mount the rectifier directly against a heat source. Even with potting, sustained ambient temps above 60°C will shorten service life. Mount with at least 20mm clearance from heat-generating components.
FAQs
Q1: Can I get both 220V and 380V versions in the same order? Do you have MOQ flexibility?
Yes, we support mixed-model orders. MOQ and pricing tiers are negotiable depending on total quantity. We work with distributors, OEM integrators, and MRO procurement teams regularly — contact us for a split-model quote.
Q2: What’s the difference between the diode type and the MOSFET type — and does it affect brake wear?
The MOSFET type discharges the brake coil faster, which means the brake engages (closes) quicker after power is cut. This reduces the “slip distance” before full braking, which can actually reduce brake pad wear in high-cycle applications because the motor isn’t fighting a half-engaged brake as long.
Q3: Are these compatible with third-party motor brands (Siemens, ABB, WEG, etc.)?
Yes. These are universal brake rectifiers — they’re wired into the motor brake coil circuit, not directly into the motor. As long as the coil voltage rating matches (99VDC or 170VDC) and input AC supply matches, they work with any brand’s electromagnetic brake.
Q4: What certifications do these carry, and can you provide test reports?
Units carry QC inspection markings per our internal standards. We can provide test reports, batch inspection records, and product specifications documentation for your sourcing compliance requirements. For specific certifications (CE, UL, etc.), please discuss with us at inquiry stage.
Q5: What’s your lead time and can you handle private label or custom branding?
Standard lead time is [X] working days for stock items, [X] weeks for larger production runs. We support OEM custom labeling, housing color, and packaging. If you’re a distributor or system integrator building your own product line, we’re set up to support that.
📩 Ready to discuss volume pricing, mixed SKU orders, or OEM requirements? Send us your application specs and we’ll get back to you with a targeted quote.