| Parameter | Value |
|---|---|
| Model | NDZ3W-150 |
| Brand | NADER (LAZZEN) — Shanghai Liangxin Electrical |
| Main Contact Form | 1NO |
| Contact Polarity | Non-polarized (no polarity requirement on main contacts) |
| Rated Operating Current | 150A |
| Rated Load Voltage | DC750V (max Ue: DC1000V) |
| Contact Resistance | ≤ 5 mΩ (at 150A) |
| Short-time Withstand Current | 3750A for 30 ms / 300A continuous |
| Maximum Breaking Current | DC320V 2000A, 1 time |
| Insulation Resistance | 100 MΩ at DC500V |
| Power Frequency Withstand Voltage | AC3500V for 60 s, leakage current ≤ 1 mA |
| Mechanical Life | 1,000,000 cycles (1200 cycles/hour) |
| Electrical Life | DC500V 300A × 6000 cycles; DC750V 150A × 1000 cycles; DC1000V 300A × 300 cycles; DC1000V 300A × 10 cycles |
| Impulse Stability | 30g (closed) / 20g (open) |
| Operating Humidity | 5% ~ 85% RH |
| Package Type | Epoxy encapsulation |
| Weight | Approximately 460g |
| Certification | CCC, CB, CE, TUV, UL |
| Place of Origin | Jiangsu, China |
| Item | Value |
|---|---|
| Control Coil Rated Voltage (Uc) | DC12V / DC24V |
| Coil Operating Voltage Range | DC9 – 36V |
| Power Consumption | 3.6W / 3.6VA |
| Coil Polarity | Polarized (built-in coil economy circuit) |
| Operating Voltage / Release Voltage | ≤ 9V / ≥ 1.2V |
| Closing / Opening / Bounce-back Time | ≤ 35 ms / ≤ 20 ms / ≤ 5 ms |
| Auxiliary Contact Type | None, 1NO, 1NC, 1NC + 1NO (optional) |
| Auxiliary Contact Rating | 2A / DC30V, 3A / AC125V |
| Minimum Switchable Load | 100 mA / 8V |
The NADER NDZ3W-150 is a 150A high-voltage DC contactor with epoxy-encapsulated construction and non-polarized main contacts, rated for DC750V load voltage (up to DC1000V maximum). Its polarized control coil with built-in economy circuit consumes only 3.6W and accepts a wide DC9–36V operating range (DC12V or DC24V rated), making it suitable for battery packs from 12V to 36V. The contactor withstands 3750A for 30 ms, carries 300A continuously, and delivers up to 1,000,000 mechanical cycles. Optional 1NO / 1NC / 1NC+1NO auxiliary contacts support status feedback in BMS and SCADA systems. It is a direct-fit alternative compatible with Hongfa HFZ16, TE Connectivity and Schaeffler EV (including Amphenol and Qunying) footprints for seamless replacement.
The NDZ3W series is designed mainly for non-polarized DC750V systems such as charging piles and home energy storage (50–300A). For DC1000V ultra-fast charging applications choose the NDZ3X series; NDZ3 ceramic and NDZ3AT types cover DC1000V–DC1500V and 120–600A. Contact us for the full datasheet and cross-reference table.
No polarity requirement on main terminals simplifies wiring in battery stacks and DC distribution panels and eliminates installation errors caused by reversed polarity.
Withstands 3750A for 30 ms and carries 300A continuously, riding through inrush currents from inverters, DC fast chargers and short-circuit events.
Only 3.6W consumption across a DC9–36V window reduces heat and coil-driver load in BMS designs; ≤35 ms closing time supports fast fault clearing.
Epoxy-encapsulated construction with Hermetically sealed ceramic-free design delivers extended service life, verified by electrical life tests up to DC1000V 300A.
Compatible with Hongfa HFZ16, TE Connectivity and Schaeffler EV (including Amphenol and Qunying) footprints — enabling seamless replacement in existing platforms.
CCC, CB, CE, TUV and UL certificates from Shanghai Liangxin Electrical (NADER) streamline approval for global energy-storage and EV-charging projects.
The NDZ3W-150 is certified CCC, CB, CE, TUV and UL. TUV SUD attestations of conformity (Low Voltage Directive 2014/35/EU) for the DC contactor product family are held by Shanghai Liangxin Electrical Co., Ltd (NADER). Copies of certificates and test reports are available on request.
Main and pre-charge switching in home and commercial battery cabinets, PV storage inverters and DC coupling panels up to DC750V.
DC output switching and insulation-fault isolation in charging stations, optimized for non-polarized DC circuits and 150A continuous load.
Main, pre-charge and auxiliary/heating contactor positions in passenger and commercial vehicles — 30g/20g impulse stability for road-vibration environments.
BDU cabinets, telecom –48V DC plants, UPS strings, forklift and AGV battery disconnects requiring safe, low-consumption DC switching.
NDZ3W series is optimized for non-polarized DC750V systems such as charging piles and home energy storage, while NDZ3X covers DC1000V ultra-fast charging applications. Both share the same epoxy package family; contact us for the cross-reference datasheet.
The control coil is polarized (built-in economy circuit): connect + to the marked terminal. Main contacts are non-polarized, so either terminal can be positive. Operating voltage is DC9–36V with DC12V or DC24V rated versions.
Yes. The NDZ3W family is compatible with Hongfa HFZ16, TE Connectivity and Schaeffler EV (including Amphenol and Qunying) mounting footprints, enabling seamless replacement. Send us your current part number for a pin-to-pin comparison.
None, 1NO, 1NC or 1NC+1NO, rated 2A/DC30V and 3A/AC125V with a minimum switchable load of 100mA/8V — ideal for BMS position feedback and interlock logic.
Yes. We supply genuine NADER/LAZZEN products with certificates (CCC, CB, CE, TUV, UL). Send quantity and destination country for price, lead time and shipping options within 24 hours.
