Three phase voltage protector can replace EVRPD-440NZ6 (Z5) M

The Schneider EVRPD-44U three-phase voltage protector can be used as an upgraded replacement product for EVRPD-440NZ5M and EVRPD-440NZ6M. This model is a new generation digital three-phase voltage protector that is compatible with a wide frequency range of 40-70Hz and can be adapted to both 50Hz and 60Hz power grids. The rated voltage covers 100-480V AC/DC and is consistent with the two old models in terms of core protection functions such as overvoltage, undervoltage, phase loss, reverse phase, and three-phase imbalance. The output contact specifications, installation methods, and control power supply are all compatible and can be directly replaced for use. Compared to the original model, the EVRPD-44U has improved measurement accuracy, parameter settings, fault recording, and self diagnostic functions, with overall better performance. It is an ideal choice to replace the EVRPD-440NZ5M and EVRPD-440NZ6M, and can be put into normal use by simply resetting the protection parameters during replacement.

Three phase voltage protector can replace EVRPD-440NZ6 (Z5) M

1、 Core substitution basis

• Model positioningEVRPD-44U is a new generation digital three-phase voltage protector from Schneider's EOCR series, specifically designed to directly replace the old EVR-PD/FD series (including EVRPD-440NZ5M and EVRPD-440NZ6M).

• Frequency compatibility：

• EVRPD-440NZ5M: Compatible50HzThe power grid.

• EVRPD-440NZ6M: Compatible60HzThe power grid.

• EVRPD-44U: Broadband40–70HzIt is compatible with 50/60Hz and can directly replace the above two models.

• Function and specification matching：

• Protection function: all haveOvervoltage, undervoltage, phase loss, reverse phase, three-phase imbalanceProtection.

• Rated voltage: all areThree phase 440V level， EVRPD-44U has a wider measurement range（100–480V AC/DC）.

• Output contacts: all are1C（1‑SPDT），AC250V/3A.

• Installation method: All supported35mm rail/panel installation.

• Reset method: all supportedManual/Electric/Automatic Reset.

2、 The upgrade points of EVRPD-44U compared to the old model

• Wide voltage/wide frequency：100–480V AC/DC、40–70Hz， Simplify the selection process.

• Digital display+knobParameter settings are more intuitive and support password locking.

• Precision improvementVoltage error * * ± 1% * * (old model about ± 5V).

• feature enhancement: New additionFrequency/harmonic measurement, fault recording, self diagnosis.

• auto-resetTime adjustable range0.5 seconds -20 minutes(Old model 1-10 seconds).

3、 Alternative precautions

1. Wiring and DimensionsThe installation holes and wiring terminals are basically compatible and can be directly replaced.

2. Parameter resetEVRPD-44U is digital and requires resetting the protection threshold and delay.

3. power controlThe EVRPD-44U control power supply is100–240V AC/DCConsistent with the old model.

4. Application scenariosSuitable for voltage protection of three-phase equipment such as motors, fans, water pumps, compressors, etc.

IV. Conclusion

EVRPD-44U can replace EVRPD-440NZ5M and EVRPD-440NZ6M 100%And with comprehensive upgrades in compatibility, accuracy, and functionality, it is an ideal replacement choice.

Three phase voltage protector can replace EVRPD-440NZ6 (Z5) M

EOCR, also known as Electronic Over Current Relay, is an intelligent motor comprehensive protector under Schneider Electric (formerly Sanhe, South Korea). It is used to comprehensively protect three-phase/single-phase motors from overload, phase loss, locked rotor, grounding and other faults and damages. The brand was originally owned by SAMWHA in South Korea and was acquired by Schneider Electric in 2001. It is now Schneider's core motor protection product.

Tangshan Hanya Electrical Equipment Co., Ltd. is the core agent of Schneider EOCR (formerly known as Sanhe) motor protector marketing service center in China. Responsible for the sales and technical services of products in the national market, we are a professional service provider for the national market. The company specializes in Schneider EOCR's full range of motor protection products, covering motor protection functions such as overload, phase loss, locked rotor, three-phase imbalance, undercurrent, grounding, and reverse rotation. They are widely used in industries such as metallurgy, power, petroleum, chemical, cement, coal, and machinery manufacturing.

We provide original factory guarantees, professional selection and configuration, on-site debugging guidance, fault solutions, and after-sales support to customers across the country. With stable and reliable product quality, sufficient stock supply, and fast response services, we help customers ensure the safe operation of motor systems, reduce equipment failures, and improve operation and maintenance efficiency. We are a long-term partner in the field of industrial motor protection.