For safety in electrical systems and machines with three-phase frequency inverters, EPA GmbH has expanded its portfolio with AC/DC sensitive residual current circuit breakers (RCCBs). With a special characteristic curve for drive technology, unwanted RCD tripping due to high leakage currents in high-frequency ranges is prevented.
The EPA RCCB2 series with AC/DC sensitive technology has a significantly higher tripping threshold than conventional models in the upper frequency range, and the residual current detection range extends far beyond the 1 kHz (type B) and 20 kHz (type B+) required by the standards and directives. EPA RCCB1 and RCCB2 detect frequencies up to 150 kHz!
EPA RCCB Type B/B+
AC/DC sensitive RCD with special characteristic for drive technology
- Tripping frequency response for the protection of systems with frequency inverters
- Rated residual current 30 mA for protection against accidental contact in accordance with the selection recommendations of DIN VDE 0100-530
- Rated residual current 0.3 A for fire protection in accordance with the guidelines of VDS 3501
- Safety through detection of smooth DC residual currents and AC residual currents up to 150 kHz
| File | Size |
|---|---|
| Brochures » LC | |
| EPA_RCCB_B_B+_Residual_Current_Device_Brochure.pdf | 6.13 M |
| EPA_RCCB_F_Residual_Current_Device_Brochure.pdf | 6.76 M |
| Manuals » LC | |
| EPA_RCCB_Residual_Current_Circuit_Breaker_User_Manual.pdf | 4.74 M |
| CAD » Ableitstrom » RCCB | |
| EPA_RCCB_1_2.zip | 1.67 M |
| EPA_RCCB_4.zip | 884.81 K |
| EPA_dfa_3.zip | 261.78 K |
| EPA_dhi_11.zip | 587.62 K |
| Certificates » LC | |
| VDE_Marks_Approval_EPA_RCCB_Residual_Current_Circuit_Breakers.pdf | 266.80 K |
About RCDs from EPA
In contrast to conventional residual current circuit breakers with tripping characteristics AC, A or F, they are used for reliable, seamless detection of all types of residual current in accordance with tripping characteristic B (as per IEC 60755). This also includes smooth DC residual currents and AC residual currents of various frequencies, including very high frequencies, which can occur in the event of a fault.
EPA RCCB1, RCCB2 and RCCBplus residual current circuit breakers are designed for use in 50 Hz AC systems with electronic equipment, such as frequency inverters, phase angle control systems, UPS, switched-mode power supplies or high-frequency inverters.
DIN VDE 0100-530 (“Erection of low-voltage installations – Part 530: Selection and installation of equipment – Switchgear and control gear”) also specifies the use of residual current circuit breakers in installations with equipment that can generate a smooth DC residual current (e.g. frequency inverters); since 1 June 2007, this has required the use of AC/DC sensitive residual current circuit breakers with tripping characteristic B / B+ for newly installed electrical installations.
The EPA RCCB1, RCCB2 and RCCBplus series residual current circuit breakers are used in all areas in which three-phase electronic devices are operated, e.g. in electrical systems for lifts and welding equipment, for ventilation systems, pump control systems and building site power distributors as well as in shopping centers, agricultural premises, sewage treatment plants, medical technology, crane operations and in the wood and metal processing industry. The EPA RCCB2 should be used especially in electrical installations where high-frequency leakage currents with high amplitude are to be expected, e.g. when using frequency inverters with EMC filters and long shielded motor supply cables.
Standards and regulations
| VDE 0100 Part 410 | Erection of low-voltage installations – Part 410: Protective measures – Protection against electric shock |
| VDE 0100 Part 530 | Erection of low-voltage installations – Part 530: Selection and erection of equipment – Switchgear and control gear |
| VDE 0100 Part 482 | Fire protection for special risks and hazards |
| VDE 0100 Part 704 | Requirements for premises, rooms and installations of a special nature – Construction sites |
| VDE 0100 Part 712 | Requirements for special types of premises, rooms and installations – Solar, photovoltaic (PV) power supply systems (new) |
| VDE 0100 Part 723 | Requirements for premises, rooms and installations of a special kind – Classrooms with experimental facilities |
| VDE 0160 / EN 50178 | (Especially sections 5.2.11.2 and 5.3.2.3) “Equipping power installations with electronic equipment”, “Use of all-current sensitive residual current devices” |
| VDE 0664 Part 10 / EN 61008 | Residual current operated circuit breakers without integral overcurrent protection (RCCBs) for household and similar applications |
| VDE 0664 | Part 100 Type B residual current circuit breakers for detecting AC and DC currents |
| IEC 60479 | Effects of electric current on humans and livestock “Hazard curves current / mA to frequency / 1 Hz … 150 kHz” |
| IEC 60755 | Additional notes on residual current devices, especially on tripping characteristics A and B |
| Guideline VdS 3501 / GDV publication Guidelines for loss prevention and preventive fire protection | Insulation fault protection in electrical installations with electronic equipment – RCCB and RCM |
| BGI 608 Safety rules of the employers’ liability insurance association | Selection and operation of electrical systems and equipment on construction and assembly sites |