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- ZCUR-791
- Adapter Board
- Sweden
- 90 × 70 × 65 mm
- 0.45kg
- 3AUA0000071032D/3AUA0000071032
- Xiamen, China
- New & In Stock
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All our products are priced very favorably because we have our own warehouse and supply.
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ABB ZCUR-791 (3AUA0000071032D / 3AUA0000071032) Product Profile
Product Overview
The ABB ZCUR-791 is an advanced residual current monitoring relay designed for industrial electrical systems. It ensures reliable detection of earth faults, enhances safety, and prevents equipment damage by continuously monitoring the residual currents in medium- and low-voltage systems. Its robust design and precise measurement capabilities make it ideal for critical industrial, commercial, and utility applications.
The ZCUR-791 belongs to the ZCUR series, which focuses on advanced protection and monitoring solutions for electrical distribution systems. This series is well-regarded for its reliability, accuracy, and ease of integration into modern automation and safety systems.
Product Parameters
| Parameter | Specification |
|---|---|
| Model | ZCUR-791 |
| Part Number | 3AUA0000071032D / 3AUA0000071032 |
| Series | ZCUR Series |
| Brand | ABB |
| Dimensions (mm) | 90 × 70 × 65 |
| Weight (kg) | 0.45 |
| Supply Voltage | 24–240 V AC/DC |
| Residual Current Range | 10 mA – 5 A |
| Response Time | < 50 ms |
| Operating Frequency | 50 / 60 Hz |
| Output Contact | 1 SPDT, 5 A @ 250 V AC |
| Communication Interfaces | Modbus RTU (optional) |
| Operating Temperature | -20°C – 60°C |
| Storage Temperature | -40°C – 70°C |
| Protection Class | IP20 |
| Compliance Standards | IEC 62020, IEC 60947-2 |
Applications
- Earth fault detection in industrial switchgear.
- Monitoring of residual currents in electrical distribution boards.
- Protection of motors and critical equipment in factories.
- Safety enhancement in commercial buildings and data centers.
- Integration into automation systems for preventive maintenance.
- Electrical distribution monitoring in energy plants and utilities.
Product Advantages
- Reliable Fault Detection: Quickly detects residual currents to prevent hazards and equipment damage.
- Wide Measurement Range: Supports detection from 10 mA up to 5 A, suitable for both sensitive and industrial applications.
- Compact Design: Small size allows installation in control panels with limited space.
- Flexible Power Supply: Operates with both AC and DC voltage between 24–240 V.
- Fast Response: Fault detection response time under 50 milliseconds.
- High Safety Standards: Compliant with international protection and safety standards.
- Optional Communication: Supports Modbus RTU for integration into modern monitoring systems.
- Robust Operation: Can withstand industrial environments with temperatures from -20°C to 60°C.
Related Models in the Same Series (ZCUR Series)
| Model | Key Parameters |
|---|---|
| ZCUR-780 | 10 mA–2 A, 24–240 V AC/DC, Dimensions 90×70×60 mm, Weight 0.42 kg |
| ZCUR-785 | 10 mA–3 A, 24–240 V AC/DC, Dimensions 90×70×62 mm, Weight 0.44 kg |
| ZCUR-790 | 10 mA–4 A, 24–240 V AC/DC, Dimensions 90×70×64 mm, Weight 0.45 kg |
| ZCUR-792 | 10 mA–6 A, 24–240 V AC/DC, Dimensions 90×70×66 mm, Weight 0.46 kg |
| ZCUR-795 | 10 mA–10 A, 24–240 V AC/DC, Dimensions 95×75×70 mm, Weight 0.50 kg |
Popular Models from the Same Brand (ABB Electrical Protection Devices)
| Model | Key Parameters |
|---|---|
| ZS-11 | Earth leakage relay, 24–240 V AC/DC, 5 A contact, Dimensions 100×70×65 mm, Weight 0.48 kg |
| EMC-200 | Motor protection relay, 0.1–10 A, 24–240 V AC/DC, Dimensions 120×80×70 mm, Weight 0.60 kg |
| TMAX XT | Molded case circuit breaker, 250–1600 A, Dimensions 140×100×90 mm, Weight 3–12 kg |
| DS200 | Residual current relay, 10 mA–5 A, 24–240 V AC/DC, Dimensions 90×70×65 mm, Weight 0.45 kg |
| CP-100 | Control relay, 5 A contact, 24–240 V AC/DC, Dimensions 80×60×50 mm, Weight 0.30 kg |
Frequently Asked Questions (FAQ)
Q1: What is the supply voltage range of ZCUR-791?
A1: The module operates on 24–240 V AC or DC.
Q2: What residual current range does it detect?
A2: It detects residual currents from 10 mA up to 5 A.
Q3: How fast does it respond to a fault?
A3: Fault detection response time is less than 50 milliseconds.
Q4: Can ZCUR-791 be used in high-temperature environments?
A4: Yes, it operates in temperatures from -20°C to 60°C.
Q5: Does it support communication with automation systems?
A5: Yes, it optionally supports Modbus RTU communication.
Q6: What type of output contact does it have?
A6: It has one SPDT output contact rated at 5 A @ 250 V AC.
Q7: What are the physical dimensions and weight?
A7: Dimensions are 90 × 70 × 65 mm, and it weighs 0.45 kg.
Q8: Is it suitable for both industrial and commercial applications?
A8: Yes, it is designed for use in industrial plants, data centers, and commercial buildings.
Q9: What protection class does it have?
A9: The device is rated IP20.
Q10: Which standards does it comply with?
A10: It complies with IEC 62020 and IEC 60947-2 standards.