| Parameter | Value |
|---|---|
| Model | NDZ3X-40B (pictured unit: coil DC12V, S/N JF4A0701086) |
| Brand | NADER by LAZZEN · Jiangsu, China |
| Series / Construction | NDZ3X epoxy-encapsulated HV DC contactor family (10-300A, up to DC1000V) |
| Main Contact | 1 pole · 1NO (SPST-NO) · blade-type quick-connect terminals |
| Load Polarity | Heteropolar - observe marked +/− terminal polarity (unlike the non-polarized NDZ3T series) |
| Rated Operating Current | 40A |
| Operating Voltage Range | DC 12 ~ 1000V (nameplate Ue: DC1000V) |
| Breaking Capacity | 40kA (short-circuit co-rating, per listing data) |
| Contact Resistance | ≤ 0.5mΩ @40A |
| Control Coil | DC 12V / 24V / 48V rated (pictured unit: DC12V) · operating window DC9-36V (listing data) |
| Auxiliary Contact | Without (this configuration) |
| Mechanical Life | 1,000,000 cycles (1,200 cycles/hour, per listing data) |
| Electrical Life | Load-dependent - share your duty point (V/A/cycles) for the life curve |
| Encapsulation / Weight | Epoxy package (dust & condensation sealed) · approx. 460g |
| Certification | CCC · CB · CE · TÜV · UL |
 Unit nameplate - NDZ3X-40B: Ue DC1000V · Ie 40A · Coil DC12V, epoxy body with flange mounting feet |  Top view - blade-type quick-connect terminals and coil tabs on the sealed epoxy housing |
| Advantage | Benefit for Your Application |
|---|---|
| ✅ Compact 1000V Epoxy Platform | Rated 40A over a DC12-1000V window in a space-saving epoxy-sealed package of approx. 460g - a high-voltage switching point where ceramic-body contactors would be oversized and costlier. |
| ✅ Ultra-Low Contact Resistance | ≤0.5mΩ at 40A keeps heat rise minimal in sealed charging-pile and BDU enclosures, reducing cooling requirements and improving system efficiency. |
| ✅ 1,000,000 Mechanical Operations | Up to one million no-load cycles at 1,200 operations/hour - years of frequent switching duty in pre-charge and auxiliary circuits. |
| ✅ BMS-Friendly Coil, 12/24/48V | DC 12/24/48V rated coil options with a DC9-36V operating window tolerate supply dips during cranking and pre-charge transients without nuisance drop-out. |
| ✅ Drop-in Replacement Potential | Nader's epoxy series is pinout-compatible with Hongfa HFZ16, TE Connectivity and Schaeffler EV solutions (per Nader's official family chart) - send your current model for a cross-reference. |
| ✅ Fully Certified | CCC, CB, CE, TÜV and UL - with TÜV SÜD attestations for low-voltage switchgear DC contactors, easing acceptance in EV charging, storage and construction machinery projects worldwide. |
Official Nader NEV application map - the NDZ3X-40 covers pre-charge and auxiliary/heating contactor positions.
EV Pre-Charge & Auxiliary Pre-charge and auxiliary/heating circuit switching in electric vehicles and BDU cabinets | DC Fast-Charging Piles NDZ3X series is positioned by Nader for DC1000V ultra-fast charging infrastructure | Construction & Industrial DC Main and auxiliary switching in construction machinery, material handling and industrial DC equipment |
| Item | Detail |
|---|---|
| Brand / Origin | NADER by LAZZEN · Made in Jiangsu, China |
| Ordering Model | NDZ3X-40B - 1NO, 40A, DC12-1000V, epoxy package, without auxiliary contact (pictured unit: coil DC12V) |
| Coil Options | DC 12V / 24V / 48V rated · operating window DC9-36V |
| Companion Models | NDZ3X-10~300 (DC1000V epoxy) · NDZ3(W)-50~300 (DC450/750V) · NDZ3T/NDZ3AT ceramic series (up to DC1500V) - one brand across pre-charge, main and auxiliary roles |
| Certification | CCC · CB · CE · TÜV · UL |
| MOQ | 1 pc |
| Lead Time | Typically 7-15 days (confirm with sales) |
| Payment | T/T, Trade Assurance, etc. (confirm with sales) |
| Warranty | 1 year |
 CE and TÜV SÜD attestations for low-voltage switchgear DC contactors (certificate copies available on request) |  Standard export packing - foam-lined inner box with traceability label, RoHS-compliant carton |
Q1. How is the NDZ3X-40B different from the NDZ3T-40H?
A: They are two different Nader families. The NDZ3X-40B is an epoxy-encapsulated contactor rated up to DC1000V with heteropolar (polarity-marked) load terminals; the NDZ3T-40H is a ceramic-sealed contactor reaching DC1500V with non-polarized terminals. Pick the NDZ3X for compact 1000V-class circuits, and the NDZ3T for 1500V storage applications.
Q2. What does "heteropolar" mean for wiring?
A: The load terminals are polarity-marked - connect + and − as labeled. Unlike non-polarized ceramic models, swapping the load polarity is not permitted on this series, so check the terminal marks during installation.
Q3. Which coil voltages are available?
A: DC 12V, 24V or 48V rated coils; the pictured unit is DC12V. The listing specifies an operating window of DC9-36V, which tolerates dips during cranking and pre-charge transients. Confirm the coil code when ordering.
Q4. What service life can I expect?
A: Mechanical life is up to 1,000,000 cycles (1,200 cycles/hour). Electrical life depends on your switching voltage and current - share your duty point (V × A × cycles per day) and we will provide the matching life data for the NDZ3X-40B.
Q5. Can it replace other brands' contactors?
A: Per Nader's official family chart, the epoxy series is pinout-compatible with Hongfa HFZ16, TE Connectivity and Schaeffler EV solutions, enabling drop-in replacement. Send us your current model for a cross-reference.
Q6. What certifications does it carry?
A: CCC, CB, CE, TÜV and UL - including TÜV SÜD attestations of conformity for low-voltage switchgear DC contactors. Certificate copies are available on request.
