DZ-6 & DZ04-2 Electromagnetic Switches: KEDU KJD17 / KJD20 Drop-in Guide
DZ-6 & DZ04-2 Electromagnetic Switches: Drop-in Replacements for KEDU KJD17 / KJD20
If your machines ship with KEDU KJD17 / KJD17B or KJD20 electromagnetic switches — a concrete mixer, a wood chipper, an industrial shredder or a food processing machine — this technical application guide from DKLD Dongke Electric explains how the DZ-6 and DZ04-2 families give you a qualification-ready alternative that adds restart prevention and an integrated emergency stop within the same footprint class.
Direct answer: Yes — DKLD's DZ-6 series is an application-compatible alternative for the KEDU KJD series (e.g. KJD17/KJD17B) of electromagnetic switches, and the DZ04-2 covers KJD20-style applications. The DZ-6-2M delivers double-pole electromagnetic motor control with emergency stop (ISO 13850), power-loss restart prevention and undervoltage protection in an IP55 enclosure, certified TÜV/CE (EN 61058, EN 60947); the LDZ-6-2M variant carries UL 61058 (cRUus) for North America.
Key Points
- Positioning: DZ-6-2M / LDZ-6-2M cover the KJD17 / KJD17B application slots; DZ04-2 covers KJD20-style applications; DZ08-2D4 / DZ08-4C6 are positioned for KEDU KOA-family switches.
- Safety by design: integrated self-locking emergency stop (ISO 13850 / IEC 60947-5-5), power-loss & undervoltage protection, and no-unexpected-restart behavior per EN 60204-1 — no separate panel-mount E-stop needed.
- Harsh-environment rated: IP55 high-strength thermoplastic housing with quick-on screw terminals — sealed against cement dust, wood chips, paper dust and splash.
- Dual certification: TÜV + CE (EN 61058, EN 60947) for Europe; cRUus (UL 61058) for North America — one switch family for both export channels.
- External protection-loop terminals: wire an overload relay, travel switch, thermostat or Hall switch into one integrated protection loop.
- Proven life: 50,000 mechanical cycles rated — qualification samples available for your own life-cycle test.
Series Positioning
| KEDU series | DKLD series alternative | Notes |
|---|---|---|
| KJD17 / KJD17B | DZ-6-2M / LDZ-6-2M | Same control class; adds E-stop + restart prevention |
| KJD20 | DZ04-2 | Series-matched alternative for KJD20 slots |
| KOA7 / KOA series | DZ08-2D4 / DZ08-4C6 | DZ08 positioned for the KOA series |
DZ-6-2M Technical Snapshot (Verified Product Data)
| Specification | DZ-6 | LDZ-6 |
|---|---|---|
| Certification | TÜV + CE (EN 61058, EN 60947) | cRUus (UL 61058) |
| Rated voltage | 250 V~ / 110 V~ | 127 V~ |
| Rated current | 16(15) A · AC-3: 15 A | 18(18) A |
| Temperature rating | T85 / T55 | T85 / T55 |
| Enclosure protection | IP55 | IP55 |
| Mechanical life | 50,000 cycles | 50,000 cycles |
| Pole configuration | Double-pole, normally open | Double-pole, normally open |
| Protection functions | Power-loss & undervoltage protection | Same |
| Safety features | E-stop (ISO 13850 / IEC 60947-5-5), restart prevention | Same |
Qualification Checklist Before Switching a Machine Line
- Confirm electrical rating match: voltage (230/110 V), current (AC-3 duty) and frequency.
- Verify panel cutout and mounting dimensions against the incumbent switch's datasheet.
- Check wiring/terminal compatibility (quick-on screw terminals, wire gauge).
- Confirm certification scope covers your target market (TÜV/CE for EU, cRUus for US/Canada).
- Request samples and run your own life-cycle test on the machine's start/stop profile.
- For EU machines, confirm EN 60204-1 restart prevention compliance; update the machine's declaration of conformity with the new component's certificates.
One component family across your whole machine range — qualified for concrete mixers, wood chippers, shredders, food processing machines and machine tools, certified for both hemispheres. Ask DKLD for the datasheet and a sample.
