Product Introduction

The DDS238-VAP-T is a multifunctional protective device that integrates single-phase two-wire AC active energy metering with comprehensive electrical protection functions. Designed to safeguard electrical equipment from grid anomalies, it provides over-voltage, under-voltage, over-current, and temperature limit protection. When a fault condition is detected—such as over-voltage, under-voltage, or over-current—the device instantly disconnects the load to prevent equipment damage. All protection thresholds are user-adjustable to suit local grid conditions. The device features a backlit LCD display showing total active energy (kWh), real-time current (A), voltage (V), active power (W), and temperature (°C). It supports bidirectional energy measurement and includes built-in lightning protection. With selectable auto-reclosing or manual-reclosing modes, adjustable protection settings, and options such as malignant load protection and cycle switch mode, the DDS238-VAP-T offers flexible and reliable protection for residential, commercial, and institutional applications.

Product Data Sheet

Model: DDS238-VAP-T

Type: Multifunctional Protective Device with Energy Metering

Application: Single-phase two-wire AC system

Display: Backlit LCD (kWh, A, V, W, °C)

Energy Measurement: Bidirectional total active energy (4+1 digit display)

Protection Functions: Over-voltage, under-voltage, over-current, temperature limit

Lightning Protection: Built-in

Reclosing Mode: Auto-reclosing or manual-reclosing (selectable)

Temperature Protection: Automatic upper and lower limit protection with recovery

Malignant Load Protection: Selectable (pure resistive load limit) for apartments and student dormitories

Cycle Switch Mode: Selectable circuit output cycle on/off

Protection Indicators: LED indication for over-voltage, under-voltage, and over-current

Protection Enable/Disable: Each protection function can be independently enabled or disabled

Fault Response: Instant load disconnection upon over-voltage, under-voltage, or over-current fault

Transient Over-Voltage Protection: Prevents false operation

Unstable Voltage Protection: Disconnects line under unstable voltage or sudden power fluctuations

Fault Voltage Tolerance: Device remains undamaged even when fault voltage reaches peak

Data Retention: Energy data retained after power failure

Long Life Features: High stability, high overload capability, low power loss, wide operating voltage range