Eaton xEffect FRCmM Residual Current Devices Catalog
This catalog provides detailed information on Eaton's xEffect FRCmM series of Residual Current Devices (RCDs), designed for industrial applications. It covers various types, their characteristics, technical specifications, and application guidelines.
Key RCD Types and Characteristics
| Type | Description | Key Features |
|---|---|---|
| AC | AC current sensitive RCCB | Standard type for AC circuits. |
| A | AC and pulsating DC current sensitive RCCB | Not affected by smooth DC fault currents up to 6 mA. |
| F | AC and pulsating DC current sensitive RCCB | Trips at frequency mixtures (10 Hz, 50 Hz, 1000 Hz), time-delayed (min. 10 ms), surge current proof (min. 3 kA), higher load capacity with smooth DC fault currents up to 10 mA. Suitable for frequency converter applications. |
| B | All-current sensitive RCD | For applications where DC fault currents may occur. Non-selective, non-delayed. Protection against all kinds of fault currents. |
| B+ | All-current sensitive RCD | Similar to Type B, with enhanced fire safety. |
| G | Selective, short-time delayed RCD | Surge current-proof up to 3 kA (min. 10 ms time delay). Used for systems requiring protection against unwanted tripping and involving long lines with high capacitive reactance. |
| S | Selective, time-delayed RCD | Surge current-proof up to 5 kA (min. 40 ms time delay). Used as main switch or in combination with surge arresters. Suitable for series connection with other RCDs. |
| U | Frequency converter-proof RCD | Short-time delayed + surge current-proof 3 kA. Designed for applications with frequency converters. |
| R | X-ray application RCD | Surge current-proof 3 kA. Designed to avoid unwanted tripping caused by X-ray devices. |
Product Features
- Comprehensive spectrum of compact residual current devices for diverse applications.
- Suitable for fault current/residual current protection and additional protection.
- Wide variety of nominal currents and accessories available.
- Features include real contact position indicator and automatic re-setting capability.
- Classified for use in rail rolling stock.
- Tripping is line voltage-independent.
- Mains connection can be on either side.
- 4-pole devices can be used for 2- or 3-pole connection.
Technical Data Highlights
Tripping Characteristics
The document includes graphs illustrating tripping characteristics, time ranges, and selectivity for different RCD types (e.g., G and S). These characteristics are crucial for ensuring proper protection and coordination within electrical systems.
Surge Current Proofing
FRCmM devices offer various levels of surge current proofing, including conditionally surge-current proof up to 250 A, and surge current-proof up to 3 kA (Type G) or 5 kA (Type S).
Frequency Converter Applications
For applications involving frequency converters, Type F RCDs are recommended due to their ability to detect mixed frequencies and reduce nuisance tripping, offering increased reliability.
Ambient Temperature Impact
The performance of RCDs can be affected by ambient temperature. Tables are provided to show the maximum permanent current allowed at different temperatures for various device ratings.
Fuse and MCB Compatibility
Guidance is provided on selecting appropriate back-up fuses (gG/gl) and Miniature Circuit Breakers (MCBs, Characteristic B/C) for different FRCmM ratings to ensure proper short-circuit protection.
Product Range and Accessories
The Eaton xEffect FRCmM series offers a wide range of products, including 2-pole and 4-pole devices with rated currents from 16 A to 100 A and various rated residual currents (e.g., 0.03 A, 0.1 A, 0.3 A, 0.5 A). A comprehensive range of accessories is also available, such as auxiliary switches, tripping signal contacts, and remote testing modules.
For more information, visit Eaton.com.
