Contactor,întrerupător de circuit,invertor solar,contor electric,baterii solare
XJ3-D is a multi-functional three-phase power protection device widely used in AC 380V power systems. Oferă protecție de patru ori pentru motoarele și circuitele asincrone trifazate împotriva defecțiunii de fază, inversare de fază, supratensiune, și subtensiune, prevenirea deteriorării echipamentelor și a accidentelor de siguranță cauzate de alimentarea anormală cu energie.
- Funcții de bază & Caracteristici
| Funcția de protecție | Technical Description | Operating Mechanism |
| Protecție împotriva erorilor de fază | Detects loss of any phase in three-phase power | Upon detection, the relay’s normally closed contact opens, cutting power to the contactor coil |
| Phase Sequence Protection | Identifies phase sequence (normal/reverse) of three-phase power | Once phase sequence is registered, load startup is inhibited if sequence changes; phase failure/reversal LED illuminates |
| Protecție la supratensiune | Protection voltage adjustable from 380V to 460V | Operating time adjustable 1.5s–4s; control circuit opens on overvoltage |
| Protecție la subtensiune | Protection voltage adjustable from 300V to 380V | Operating time adjustable 2s–9s; control circuit opens on undervoltage |
Caracteristicile produsului:
Multi-mode fault indication (three LEDs for phase reversal/failure, supratensiune, subtensiune)
Reliable performance, wide application range, easy to use
Dimensiune compactă, convenient DIN-rail mounting
| Respectă GB/T 14048.5
- Parametrii tehnici
| Articol | Caietul de sarcini | Observații |
| Rated control supply voltage | AC 380V, 50/60Hz | Direct three-phase power supply |
| Overvoltage protection range | 380V–460V (reglabil) | Factory default approx. 420V |
| Undervoltage protection range | 300V–380V (reglabil) | Factory default approx. 340V |
| Overvoltage operating time | 1.5s–4s (reglabil) | Time delay to avoid misoperation |
| Undervoltage operating time | 2s–9s (reglabil) | Time delay to avoid misoperation |
| Phase failure operating time | ≤2s | Răspuns rapid |
| Phase sequence operating time | ≤1s | Răspuns rapid |
| Contact rating | AC-15: 220V/5A, 380V/3A | Control circuit load capacity |
| Dimensiuni | Aproximativ. 45×75×105mm | Standard DIN-rail size |
| Montare | DIN-rail mounting | Complies with EN 50022 |
- Operating Principle
The XJ3-D achieves comprehensive protection via internal voltage detection, phase detection, and time-delay circuits:
- Voltage detection: Monitors three-phase voltage amplitude in real time and compares with set over/undervoltage thresholds
- Phase detection: Analyzes phase relationship to judge correct sequence and phase loss
- Logic judgment: Triggers time delay (over/undervoltage) or direct protection (phase failure/reversal) when abnormality is detected
- Protection action: Internal relay operates; normally closed contact opens, cutting power to downstream contactor coil and de-energizing the main circuit
LED Status Indication:
Normal operation: All three LEDs off (faint glow of phase reversal/failure LED under slight unbalance is normal)
Eșecul de fază / reversal: Phase reversal/failure LED on
Supratensiune: Overvoltage LED on
Subtensiune: Undervoltage LED on
- Cablaj & Instalare
4.1 Standard Terminal Definition
| Terminal No. | Funcţie | Wiring Description |
| 1, 2, 3 | Three-phase power input | Connect to L1, L2, L3 (380V); any sequence allowed, auto-learn on first power-on |
| 5, 6 | Normally open (NU) contact | Open under normal protection, closed on fault |
| 7, 8 | Normally closed (NC) contact | Closed under normal protection, open on fault (commonly used for contactor coil control) |
| 9 | Common terminal | Used with terminals 5 şi 7 |
4.3 Note de instalare
Must be installed by qualified personnel in strict accordance with wiring diagrams
| Install in dry, ventilated areas free of corrosive gas; ambient temperature -5℃ ~ +40℃
If load fails to start after correct wiring, swap any two phases to re-learn phase sequence
Regularly check terminal tightness to prevent poor contact
- Mărci & Selecţie
Main Brands: Delicios, CHINT, People Electric, Taihua Electric, etc.
Ghid de selecție:
- Confirm control voltage is three-phase AC 380V
- Select appropriate contact rating based on load type
- Choose XJ3-D (multi-function) if over/undervoltage protection is required
- Choose simplified models such as XJ3-G1 if only phase failure and phase sequence protection are needed
- Depanare
| Fault Symptom | Cauze posibile | Depanare |
| Phase reversal/failure LED always on | 1. Incorrect phase sequence | 1. Swap any two power lines |
| 2. One phase missing | 2. Check three-phase supply | |
| 3. Cabluri slăbite | 3. Tighten terminals | |
| Overvoltage LED always on | 1. Excessively high supply voltage | 1. Measure line voltage |
| 2. Overvoltage threshold set too low | 2. Adjust overvoltage potentiometer | |
| Undervoltage LED always on | 1. Low supply voltage | 1. Measure line voltage |
| 2. Undervoltage threshold set too high | 2. Adjust undervoltage potentiometer | |
| Cannot reset after protection | 1. Power abnormality not resolved | 1. Restore power then repower |
| 2. Internal protector fault | 2. Replace the unit |
As a mature multi-function three-phase power protection device, the XJ3-D effectively prevents motor burnout caused by phase failure, reversal, supratensiune, și subtensiune. It is widely used in control circuits for pumps, fani, compresoare, masini-unelte, and other three-phase equipment, making it an indispensable component in industrial automation systems.
Comparație de modele & Price Guide for Phase Sequence Protectors (Various Brands)
Below is a comparison of mainstream domestic and imported phase sequence protectors, focusing on models equivalent to the XJ3-D (four-fold protection: phase failure, sequence, supratensiune, subtensiune), with market price ranges and key differences for easy selection and procurement.
- Domestic Brands -Model Comparison & Preturi (April 2026)
1.1 Core Function Comparison
| Marca | Multi‑function Type (Eșecul de fază + Secvenţă + Supratensiune + Subtensiune) | Tip de bază (Eșecul de fază + Secvenţă) | Note |
| CHINT | XJ3-D AC380V | XJ3-G AC380V | XJ3-5 with base |
| Delicios | XJ3-D AC380V (XJ3D380) | XJ3-G AC380V (XJ3G380) | Fully compatible with CHINT, same mounting size |
| PEOPLE | XJ3-D AC380V | XJ3-G AC380V | Slightly lower price |
| Taihua | XJ3-D AC380V | XJ3-G AC380V | Cost-effective for bulk purchase |
| Naidian | NDX-D AC380V | NDX-G AC380V | Fully XJ3-series compatible |
1.2 Price List (CNY)
| Marca | Model | Official Store Price | Wholesale Price | Retail Price (Taobao) | Caracteristici |
| CHINT | XJ3-D | 72.27–108.82 | 30–40 | 38–50 | Stable, high market share |
| CHINT | XJ3-G | 40–50 | 25–35 | 28–38 | Basic protection, economical |
| Delicios | XJ3-D | 79.8 | 32–42 | 40–55 | Adjustable over/undervoltage |
| Delicios | XJ3-G | 40.4 | 22–30 | 25–35 | High cost-performance |
| PEOPLE | XJ3-D | 65–80 | 28–38 | 35–45 | Moderate price, reliable |
| PEOPLE | XJ3-G | 35–45 | 22–30 | 25–32 | Basic function, affordable |
- Imported Brands -Model Comparison & Preturi
2.1 Equivalent Models to XJ3-D
| Marca | Multi‑function Type | Tip de bază | Price Range (CNY) |
| Schneider | RM22TG20 (with over/undervoltage) | RM22TG20 (basic) | 216–350 |
| ABB | CM-PVS.41S (voltage monitoring) | CM-PFE / CM-PFS.S | 335–799 |
| Carlo Gavazzi | DPA51CM44 (multi-function) | DPA51CM44 (basic) | 180–300 |
| Siemens | 3UG4512-1AW30 | 3UG4511-1AW30 | 280–450 |
2.2 Key Features of Imported Models
Schneider RM22TG20: 208-480VAC, global voltage, 2CO contacts, response ≤1s
ABB CM-PVS.41S: Phase imbalance protection, adjustable delay, for precision equipment
Carlo Gavazzi DPA51CM44: DIN rail, LED indication, adjustable thresholds, best value among imports
Siemens 3UG4512: High integration, PLC communication, for high-level automation
- Referință de selecție & Note
3.1 Application Guide
| Aplicație | Recommended Type | Reason |
| General three-phase motors (pompe, fani) | XJ3-G / XJ3-D | Sufficient basic protection, economical |
| Precision equipment (CNC, compresoare) | XJ3-D / imported multi‑function | Over/undervoltage protection prevents damage |
| Non‑reversible equipment (lifturi, macarale) | Must include phase sequence protection | Prevents reverse rotation hazards |
| Unstable grid areas | XJ3-D / imported multi‑function | Protects against voltage fluctuations |
3.2 Price Factors
- Funcţie: Multi-function models (XJ3-D) cost ~30-50% more than basic types (XJ3-G)
- Marca: Imported units are 3-5× more expensive than domestic
- Channel: Official > retail > wholesale
- Cantitate: 10%-20% discount for bulk orders (≥10 pcs)
3.3 Compatibility Notes
All XJ3 series use DIN-rail mounting (ÎN 50022), identical dimensions
Same terminal layout: 1/2/3 = three-phase input; 7/8 = NC contact
Direct interchangeable among domestic XJ3 models; verify size/wiring for imports
- Rezumat & Sugestii de achiziții
| Budget | Model recomandat | Aplicație |
| Scăzut (≤50 CNY) | CHINT / Delicios / PEOPLE XJ3-G | General motor protection |
| Mediu (50–100 CNY) | CHINT / Delixi XJ3-D | Most industrial applications |
| Ridicat (≥200 CNY) | Schneider RM22TG20 / ABB CM-PVS.41S | Precision equipment & critical lines |
Phase Sequence Protector Model List
Below is a list of mainstream models functionally equivalent to the XJ3-D (phase failure + sequence + supratensiune + subtensiune), categorized by brand with key parameters and April 2026 price ranges for quick selection.
- Domestic Mainstream Models (AC 380V)
1.1 Multi-function Type
| Marca | Model | Parametri cheie | Preţ (CNY) | Note |
| CHINT | XJ3-D AC380V | Overvoltage 380–460V, undervoltage 300–380V, contact 5A/220V | 38–108 | Official: 72.27–108.82 |
| CHINT | XJ3-D-40 AC380V | With base, same as XJ3-D | 45–120 | Easy replacement |
| Delicios | XJ3-D AC380V | Overvoltage delay 1.5–4s, undervoltage 2–9s, LED | 40–79.8 | Official: 79.80 |
| PEOPLE | XJ3-D AC380V | Phase failure ≤2s, sequence ≤1s, DIN rail | 35–80 | Lower price |
| Taihua | XJ3-D AC380V | XJ3 compatible, adjustable thresholds | 32–65 | Bulk-friendly |
| Naidian | NDX-D AC380V | Same function as XJ3-D | 30–60 | Domestic alternative |
| CHINT | NJB1-X | Secvenţă + failure + imbalance, 380–480V | 45–90 | For unstable voltage |
1.2 Tip de bază
| Marca | Model | Parametri cheie | Preţ (CNY) | Note |
| CHINT | XJ3-G AC380V | Phase failure/sequence, 3A/380V | 28–50 | Official: 40–50 |
| Delicios | XJ3-G AC380V | Failure ≤2s, sequence ≤1s | 25–40.4 | Official: 40.40 |
| PEOPLE | XJ3-G AC380V | DIN rail, LED | 25–45 | Economical |
| Delicios | XJ3-2 AC380V | Simplified sequence + failure | 22–35 | Basic circuits |
| Delicios | XJ3-5 AC380V | Failure + sequence + imbalance (7–10%) | 30–50 | With imbalance protection |
- Imported Models (Equivalent to XJ3-D)
2.1 Multi-function Type
| Marca | Model | Parametri cheie | Preţ (CNY) | Caracteristici |
| Schneider | RM22TG20 | 208–480VAC, 2CO, ≤1s | 216–350 | 22.5mm latime |
| Schneider | RM4TG20 | Same as RM22TG20 | 180–280 | Localized version |
| ABB | CM-PVS.41S | 208–440V, imbalance, adjustable delay | 335–799 | High precision |
| Carlo Gavazzi | DPA51CM44 | 380V, reglabil, LED | 180–300 | Răspuns rapid |
| Siemens | 3UG4512-1AW30 | 380V, over/undervoltage + failure + sequence, PLC | 280–450 | High integration |
| Schneider | RM22TR33 | Three-phase monitoring + over/undervoltage + imbalance | 240–380 | Full protection |
2.2 Tip de bază
| Marca | Model | Parametri cheie | Preţ (CNY) | Caracteristici |
| Schneider | RM22TR20 | 208–440V, failure + sequence | 180–280 | Modular |
| ABB | CM-PFE.S | 208–440V, 1CO, ≤1s | 280–550 | Compact |
| ABB | CM-PFS.S | 208–440V, 2CO, fault memory | 320–600 | Critical loads |
| Siemens | 3UG4511-1AW30 | 380V, failure + sequence, LED | 220–350 | Grad industrial |
| Carlo Gavazzi | DPA51CM44 (basic) | 380V, failure + sequence | 150–250 | Simplified |
- Special Application Models
| Marca | Model | Caracteristici | Aplicație | Preţ (CNY) |
| CHINT | XJ12 | Elevator‑specific, failure + sequence + imbalance | Elevator control | 50–100 |
| Delicios | ZYD1 | Pump‑specific, failure + sequence + supracurent | Pump circuits | 45–90 |
| Schneider | RM22TU23 | Three-phase monitoring + subtensiune | Unstable grids | 200–320 |
| ABB | CM-MPS.41S | Motor protection + phase sequence | Integrated motor protection | 400–800 |
- Quick Selection Reference
4.1 Naming Rules (Domestic XJ3 Series)
XJ3: Basic phase failure & sequence relay
D: Multi-function (failure + sequence + supratensiune + subtensiune)
G: Basic type (failure + sequence)
2/5: Special functions (2 = basic; 5 = with imbalance)
AC380V: Tensiune nominală
4.2 Montare & Compatibilitate
All XJ3: DIN-rail mount (ÎN 50022), dimensions ~45×75×105mm
Identical terminal definition: 1/2/3 = power; 7/8 = NC
Domestic XJ3 models directly interchangeable
4.3 Price Factors
| Factor | Price Difference |
| Funcţie | Multi‑function +30–50% |
| Marca | Imported = 3–5× domestic |
| Channel | Official > retail > wholesale |
- Procurement Advice
- General industry: Domestic XJ3-D (CHINT/Delixi), 50-80 CNY
- Precision/critical lines: Imported (Schneider RM22TG20 / ABB), 200-400 CNY
- Basic protection: XJ3-G, 25-40 CNY
