Residual current circuit breakers (RCCB) B and B+ type

Product catalog summary

Overview of Residual Current Circuit Breakers (RCCBs) EFI:
RCCBs are designed to protect against electrical faults by detecting residual currents. They are suitable for various network systems including TN-S, TN-CS, TT, and IT systems. The EFI series offers multiple types and configurations to cater to different protection needs.

Key Features:

Terminals compatible with wires and busbars for efficient installation.
Real contact position indication for easy status identification.
Support for different types of residual currents: AC, A, B, and B+.
Rated conditional short-circuit current of 10 kA.
Test button for functionality checks.
Available for single-phase and three-phase systems.

Types of RCCBs:

Type AC: Sensitive to alternating sinusoidal AC residual currents.
Type A: Sensitive to both AC and pulsating DC residual currents.
Type B: Sensitive to AC, pulsating DC, and smooth DC residual currents up to 1kHz.
Type B+: Similar to Type B but with sensitivity up to 20kHz.

Classification by Break Time:

Instantaneous: Maximum break time of 40ms.
G/KV-Short Time Delay: Break time between 10ms and 40ms.
S-Selective: Break time between 40ms and 150ms.

Applications:

Protection against indirect and direct contact with live parts.
Fire protection in systems prone to resistive faults.
Use in environments with potential for smooth DC residual currents, such as photovoltaic systems and electric vehicle charging stations.

Technical Specifications:

Rated currents range from 16A to 100A.
Rated residual currents (IΔn) range from 0.03A to 0.5A.
Compliance with standards IEC/EN 61008-1 and IEC/EN 62423 for different types.

Accessories:

Auxiliary switches for remote signaling of contact conditions.
Shunt trip release for additional safety measures.

Catalog excerpts

Residual current circuit breakers (RCCB) B and B+ type-1

Residual current circuit breakers RCCBs - Residual current circuit breakers EFI Features of residual current circuit breakers EFI  Rated conditional short-circuit current : 10 kA  AC - pure sinus residual current,  A - AC + pulsating direct current  B - AC + A + smooth direct current + high frequency (1kHz)  B+ - AC + A + smooth direct current + high frequency (20kHz)  Quality seal for tested reliability  Real contact position indication for easier contact status identification  Test button enables user to check residual functionality  Various quality marks  RCCBs can be supplied with single phase and three phase busbars  The terminals accept not only wires but also time saving busbars  Supply is possible both from top and bo

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Residual current circuit breakers (RCCB) B and B+ type-2

Residual current circuit breakers Residual current circuit breakers can be used in TN-S, TN-CS, TT and IT network systems, or with other words, in all systems where neutral and protective conductors are separated. Residual current circuit breakers EFI are used for protection against indirect contact (fault protection) and direct contact (additional protection) of parts under voltage. In the case of protection against indirect contact (fault protection) you can use residual current protective devices with a rated residual current of I < 300mA. Residual current protective devices with a rated residual...

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Residual current circuit breakers (RCCB) B and B+ type-3

Residual current circuit breakers Use of AC, A, and B type of RCCB’s in case of different fault conditions AC Single phase Phase control Single phase rectifier Two-pulse bridge Two-pulse bridge, half controlled Two-pulse bridge between phases Single phase with smoothing IL L Three-phase star Six-pulse bridge between phases

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Residual current circuit breakers (RCCB) B and B+ type-4

A and AC type residual current circuit breaker EFI-2 Rated residual current Rated current Type 0,03 - 0,5 A 16 - 80 A A, AC A and AC type residual current circuit breaker EFI-4 Rated residual current Rated current Type EFI-4 Type A, EFI-4 Type AC Newt * Version with N-pole on the left side is also available. 32 Technical data on page 60

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Residual current circuit breakers (RCCB) B and B+ type-5

Features and advantages of UNIVERSAL CURRENT SENSITIVE RCCBs B type and B+ type asti APPLICATION ■ Fault protection (protection against indirect contact of live parts) ■ Additional protection (protection in case of direct contact of live parts, IAn<30mA) ■ Fire Protection (for locations exposed to fire hazard) Residual current sensitivity - UNIVERSAL AC pure sinus residual current, 50/60Hz A sinus and pulsating direct current, 50/60Hz B AC + A + smooth direct current + high frequency (1kHz) B+ AC + A + smooth direct current + high frequency (20kHz) Basic types according to rated values: 4p...

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