DKLD Electromagnetic Switch Selection Guide: DZ04 vs DZ05 vs DZ07 vs DZ08 vs DZ-6
Which DKLD Electromagnetic Switch Do I Need? DZ04 vs DZ05 vs DZ07 vs DZ08 vs DZ-6
Every DKLD electromagnetic switch family is built for a different application slot: single-phase power tools, three-phase motor control, KEDU KOA replacement, or safety-critical machines with an integrated emergency stop. This selection guide from DKLD Dongke Electric maps each DZ series to the machine it fits, with the certified ratings from the DKLD catalog.
Direct answer: Choose by motor type, current, and safety requirements — for single-phase tools up to 10 A with an IP55 enclosure, pick the DZ04 series (DZ04-2D: 10(10) A 240 V~, TÜV/CE EN 61058; LDZ04-2D: 14(14) A 127 V~, UL 61058). For single-phase machines up to 16 A that need an integrated emergency stop and restart prevention, pick the DZ-6-2M (16(15) A 250 V~, IP55, ISO 13850 E-stop, TÜV/CE + cRUus UL 61058 variants). For three-phase 400 V motor duty, pick the DZ05B (AC-3 10 A, IP55) or the contactor-style DZ07 (AC-3 12 A @ 400 V, panel-mount). To replace an installed KEDU KOA switch, pick the DZ08 series (KOA1/KOA2/KOA7/KOA8 slots, 16 A 250 V~ and three-phase 380 V). If you ship to North America, specify the LDZ variants, which carry UL 61058 (cRUus) recognition.
DKLD DZ Series at a Glance
| Series | Representative model | Certification | Rated current / voltage | Protection | Mechanical life |
|---|---|---|---|---|---|
| DZ04 | DZ04-2D / LDZ04-2D | TÜV/CE (EN 61058) · UL (UL 61058) | 10(10) A 240 V~ / 14(14) A 127 V~ | IP55 | 50,000 cycles |
| DZ05 | DZ05B | TÜV (EN 60947) | AC-3 10 A @ 400 V~ | IP55 | 50,000 cycles |
| DZ07 | DZ07D | TÜV/CE (EN 60947) | AC-3 12 A / AC-15 6 A @ 400 V~; AC-3 16 A / AC-15 8 A @ 250 V~ | IP00 (panel mount) | 6,050 cycles |
| DZ08 | DZ08-2A3 | TÜV/CE (EN 61058, EN 60947) | AC-3 16 A @ 250 V~; AC-3 12 A @ 400 V~ (2P+E 16 A) | IP54/IP55 | 50,000 cycles |
| DZ-6 | DZ-6-2M / LDZ-6-2M | TÜV/CE (EN 61058, EN 60947) · cRUus (UL 61058) | 16(15) A 250 V~ (AC-3 15 A) / 18(18) A 127 V~ | IP55 | 50,000 cycles |
Application → Series Decision Table
| Your machine | Motor / load | Recommended series | Why |
|---|---|---|---|
| Power tools, woodworking machines (single-phase) | Single-phase ≤ 10 A | DZ04-2D | Compact, IP55, TÜV/CE EN 61058, emergency stop |
| Concrete mixers, chippers, shredders, large machines | Single-phase ≤ 16 A, safety-critical | DZ-6-2M | Double-pole, ISO 13850 E-stop, power-loss restart prevention, TÜV/CE + UL variants |
| Pumps, fans, compressors, material handling | Three-phase 400 V | DZ05B / DZ07 | AC-3 10–16 A motor duty per EN 60947 |
| KEDU KOA changeover projects | KOA1 / KOA2 / KOA7 / KOA8 slots | DZ08 series | Drop-in replacement, same mounting and control class |
| North America export | 127 V~ market | LDZ variants (LDZ04, LDZ-6) | UL 61058 (cRUus) recognition |
How the Series Differ
DZ04 and DZ08 are appliance-component switches certified to EN 61058 — they live inside the tool or machine and are sold with the tool's safety evaluation. DZ05 and DZ07 are motor-duty switches certified to EN 60947 with AC-3 utilization ratings, built for direct motor switching; DZ07 is contactor-style (IP00, panel mount) while DZ05B keeps an IP55 enclosure. DZ-6-2M combines EN 61058 component certification with an integrated emergency stop per ISO 13850 / IEC 60947-5-5 and power-loss restart prevention — the safety-critical slot. For a deeper comparison of the two standard classes, see Electromagnetic Switch vs Contactor and UL 61058 vs EN 61058.
FAQ
Which DKLD switch replaces a KEDU KOA1 / KOA2?
The DZ08-2A3 (2P+E, 16 A 250 V~, IP54/IP55) replaces KOA1/KOA2 slots; the DZ08 series also covers KOA7 and KOA8 with compact and three-phase 380 V models. See the DZ08 KEDU KOA replacement guide.
Which DKLD electromagnetic switches have an emergency stop?
DZ04-2D and DZ-6-2M integrate an emergency stop as standard; DZ05B and DZ07D can be configured with an emergency stop on request. The DZ-6-2M E-stop meets ISO 13850 / IEC 60947-5-5.
Does DKLD make UL-certified switches for North America?
Yes — the LDZ variants carry UL 61058 (cRUus) recognition: LDZ04-2D at 14(14) A 127 V~ and LDZ-6-2M at 18(18) A 127 V~, with UL verification documents available to qualified customers during technical review.
What is the difference between the DZ07 and the DZ04?
DZ07 is a contactor-style motor-duty switch per EN 60947 with AC-3/AC-15 dual ratings (up to AC-3 16 A at 250 V~, AC-3 12 A at 400 V~) for panel mounting; DZ04 is an EN 61058 appliance-component switch with IP55 for mounting inside power tools.
Which series covers three-phase 380 V applications?
DZ05B (AC-3 10 A @ 400 V~, IP55), DZ07 (AC-3 12 A @ 400 V~, panel mount) and the DZ08-4A5 three-phase 380 V model (KOA8 replacement slot).
DKLD (dkldcn.com) designs and produces electromagnetic switches in Yueqing, Zhejiang — the heart of China's low-voltage electrical industry — with TÜV/CE and UL certification; certificate documents and official verification guidance are shared with qualified customers during technical review.
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