Product Overview
When your facility needs precise three-phase power measurement for energy management and predictive maintenance, the KEB 750-494 Industrial Automation Module delivers. This compact DIN-rail mount module captures voltage, current, power, energy, and harmonic data up to the 41st harmonic. With 24-bit resolution and True RMS measurement, the KEB 750-494 provides the accuracy required for real-time power monitoring and cost-saving analytics.
The KEB 750-494 integrates seamlessly into control cabinets via its 5 VDC system supply and CAGE CLAMP connections. Its robust design withstands vibration (4g) and shock (15g) per IEC standards, making it suitable for demanding industrial environments.
Technical Specifications
The KEB 750-494 offers comprehensive measurement capabilities. Below are the key parameters that define its performance:
| Parameter |
Value |
| Number of measurement inputs |
6 (3 voltage, 3 current) |
| Resolution |
24 bits |
| Data width |
2 x 128-bit data; 2 x 64-bit control/status |
| Measurement current (max.) |
1 A |
| Rated voltage |
277 V AC/DC; 480 VAC LN-LL |
| Frequency range (mains) |
45 … 65 Hz |
| Frequency range (harmonics) |
0 … 3300 Hz |
| Measurement error (max.) |
0.5% of upper-range value |
| Supply voltage |
5 VDC via data contacts |
| Power consumption (5 V) |
100 mA |
| Isolation |
4 kV system/field |
| Connection technology |
8 x CAGE CLAMP |
| Weight |
49.6 g |
| Width |
12 mm / 0.472 in |
| Protection type |
IP20 |
| Operating temperature |
0 … 55 °C |
Industry Applications
The KEB 750-494 excels in power monitoring for industrial automation. Use it in:
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Energy management systems: Calculate power output, energy consumption, and THD to identify inefficiencies and reduce operational costs.
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Predictive maintenance: Monitor harmonics and power quality to detect motor or drive degradation before failure.
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Machine testing: Validate three-phase power parameters on production lines with True RMS accuracy.
In each application, the KEB 750-494's adjustable measurement cycle time allows you to capture average, minimum, and maximum values, supporting both real-time control and historical analysis.
Installation & Setup
Mount the KEB 750-494 onto a DIN-35 rail in any orientation—horizontal (standing or lying) or vertical. Wire inputs using CAGE CLAMP technology accepting 0.08–2.5 mm² (28–14 AWG) solid or fine-stranded conductors with a strip length of 8–9 mm. The module connects to the system via data contacts for 5 VDC power. Ensure the surrounding air temperature stays between 0–55 °C and relative humidity below 95% (non-condensing). For EMC compliance, follow EN 61000-6-2 (immunity) and EN 61000-6-3 (emission) guidelines.
Selection Guide
Before purchasing the KEB 750-494, verify your system voltage (480 VAC line-to-line maximum) and current (1 A maximum). This module measures power, energy, line-to-line voltage, power factor, frequency, and harmonics—ideal for three-phase networks with any periodic signals. For compatible accessories or integration support, contact a reliable supplier like PLC Source PRO (visit ubest101.myshopify.com) to ensure a seamless fit into your automation architecture.