LXLZ Note: This Product Provides Solutions for Parameter Customization And Application.
KZL-1 Brake Rectifier 2-Wire Motor Brake Module
What This Thing Actually Does
If you’re running AC motors with electromagnetic brakes — on hoists, conveyors, packaging lines, CNC equipment, or any machine that needs a clean, fast stop — you already know the pain of a slow or inconsistent brake response. That’s exactly where this rectifier comes in.
The KZL-1 converts AC input (220VAC) to regulated DC output (99VDC) to power the motor’s electromagnetic brake coil. The result: the brake engages faster, releases cleaner, and holds more consistently than running off an unregulated or half-wave supply. The fast-response circuit design means braking happens in milliseconds — not the sluggish response you’d get with a standard diode bridge.
From the image, you can see two variants side by side — the black unit (ZLKS-99-4, 220VAC in / 99VDC out) and the red unit (ZLKS-170-4, 380VAC in / 170VDC out). Both share the same compact, epoxy-potted block design with clearly color-coded pre-wired leads. Clean, simple, no guesswork on installation.
Table of Contents
Key Specifications
| Parameter | Details |
|---|---|
| Model | KZL-1 / ZLKS Series |
| Input Voltage | 220VAC (black) / 380VAC (red) |
| Output Voltage | 99VDC / 170VDC |
| Circuit Type | Diode Type / MOSFET (FET) Fast Type |
| Brake Response | Fast-acting — optimized for rapid brake engagement |
| Wiring | 2-wire input, pre-soldered pure copper leads |
| Conductor Material | Pure copper wire — not CCA, not aluminum |
| Housing Material | Premium PBT (Polybutylene Terephthalate) — flame-retardant, heat-stable |
| Encapsulation | Full epoxy potting — moisture, vibration, dust resistant |
| Lead Color Coding | Red = AC input, Black = DC output (clearly labeled) |
| QC | Factory inspected — “合格” (Passed) label on each unit |
| Application | Electromagnetic motor brakes, 3-phase AC motor brake coils |
Why Buyers Specify This Over Generic Alternatives
Look, there are a lot of cheap rectifier modules floating around the market. Here’s what separates this one for buyers who’ve been burned before:
1. Pure Copper Conductors — Not a Compromise
We use full pure copper wire on every lead. CCA (copper-clad aluminum) looks fine on day one. Give it 18 months in a warm control cabinet and you’ll start seeing resistance creep, connection failures, and warranty headaches. Pure copper is the spec industrial OEMs actually want.
2. PBT Housing, Not Generic Nylon
PBT handles heat cycles better than standard PA66 or generic thermoplastics. In motor control panels where ambient temps regularly hit 60–80°C, this matters. The housing won’t soften, won’t warp, won’t lose its dimensional stability around your mounting points.
3. Full Epoxy Potting
The entire internal circuit is potted solid. That means no vibration damage to solder joints, no moisture ingress from condensation in outdoor enclosures, and no accidental contact with live components during maintenance. This is the standard for industrial-grade components — not the open-PCB units you’ll find at lower price points.
4. Fast-Brake Circuit Design (MOSFET Type Available)
The standard diode-type module works fine for most applications. If your machinery requires extremely fast brake engagement — say, precision positioning equipment, servo-assisted hoists, or safety-critical stops — the MOSFET (FET) fast-response version cuts the release and engage time significantly. We offer both; you pick based on your actual application requirement.
5. Factory QC on Every Unit
Each module ships with an individual inspection label. For buyers supplying into OEM production lines or MRO channels, this matters from a traceability standpoint.
Typical Applications (Where We See These Specified Most)
- Overhead cranes & hoists — where a clean, fast brake stop is a safety requirement
- Conveyor systems — preventing material drift or overshoot on stop
- Packaging machinery — high-cycle applications needing consistent brake performance
- CNC machine tool spindle brakes — precise stop positioning
- Textile machinery — fast stop to prevent thread breakage or jam
- Elevator & lift systems — brake coil rectification on holding brakes
- General industrial motor control panels — retrofit or OEM build
Installation Notes (What Experience Tells Us)
A few things we tell every new buyer:
- Match your input voltage first. 220V input → 99VDC output (black). 380V input → 170VDC output (red). Wrong unit on the wrong supply is the #1 field error we hear about.
- Check your brake coil’s DC voltage rating before specifying. Most Chinese-made electromagnetic brakes are rated for 99VDC or 170VDC — these modules are designed to match that standard exactly.
- Wire the input leads to the same phase as the motor contactor where possible. This ensures the brake releases in sync with motor energization and engages when power drops.
- For high-cycle applications (>100 stops/hour), go with the MOSFET fast-type. It handles thermal load better in rapid switching duty.
- Don’t overtighten the wire terminals if you’re connecting to a terminal block — the leads are tinned copper, pre-stripped to standard length.
FAQ — What B2B Buyers Ask Us Most
Can I get custom output voltages, or am I locked into 99V and 170V?
These are the two standard outputs that match the brake coil ratings on the vast majority of AC motors in the market. That said — yes, we do custom output voltages for OEM customers placing volume orders. If your motor brake coils are rated for something non-standard (say, 90VDC or 180VDC), talk to us. Minimum quantity applies for custom specs.
What’s the difference between the diode type and the MOSFET (FET) type? Which one should I order?
The diode type is a half-wave or full-wave rectifier using standard diodes — reliable, cost-effective, handles most industrial brake applications without issue. The MOSFET fast type uses field-effect transistors in the switching circuit, which reduces the brake release/engage delay significantly. If your application is general-purpose (conveyors, standard hoists, packaging lines), the diode type is fine. If you’re doing precision stops, high-cycle operations, or the equipment spec sheet calls out fast-response braking, go MOSFET. When in doubt, tell us your cycle rate and motor specs — we’ll recommend.
What’s the expected service life, and what typically causes failure in the field?
In normal industrial environments, these units run for years without issue — we see 5–8 year field life regularly in well-installed applications. The most common causes of premature failure we hear from the market: (1) wrong input voltage — putting 380V into a 220V unit blows it immediately; (2) installation in environments with heavy condensation without an enclosure — the potting handles moisture well but it’s not rated for direct water exposure; (3) oversized brake coils drawing more current than the module is rated for. Specify correctly and these things just run.
Do you support OEM labeling or private branding for our product line?
Yes. We work with distributors and OEM equipment manufacturers on private label production. Your logo, your model number, your color code — we handle it at the factory level. MOQ and lead time depend on the volume and spec. Send us your requirements and we’ll give you a straight answer on feasibility and pricing.
What’s the minimum order quantity, and how do you handle mixed SKU orders?
We’re a factory — we’re set up for volume production, but we also understand that B2B buyers sourcing for MRO or building a product range need to test before they commit. Ask us about sample orders and mixed-SKU trial quantities. For regular production orders, standard lead times apply and we can discuss blanket order arrangements if you have predictable demand.
Ready to discuss volume pricing or custom specifications? Contact us with your motor brake specs and we’ll get back to you with a direct quote — no runaround.