RCCB-Btype

Product catalog summary

Features and Advantages
UNIVERSAL CURRENT SENSITIVE RCCBs B type and B+ type are designed for fault protection, additional protection, and fire protection. They are sensitive to various types of residual currents, including AC, pulsating direct current, and smooth direct current, with B+ type also handling high frequencies up to 20kHz.

Specifications
The RCCBs are available in 4-pole configurations with rated currents of 25A, 40A, and 63A, and residual current ratings (IΔn) of 30mA, 100mA, and 300mA. They are categorized by breaking times: instantaneous, short time delayed (G/KV), and selective (S).

Standards
These devices comply with IEC/EN 61008-1 for AC and A types, IEC/EN 62423 for type B, and VDE 0664-400 for B+ requirements.

Mode of Operation
The RCCBs operate with pure AC and pulsating DC residual current sensitivity, which is voltage independent, while smooth DC current sensitivity is voltage dependent with a minimum operating voltage of 50V.

Typical Applications
These RCCBs are suitable for environments vulnerable to smooth DC residual currents, such as frequency converters, photovoltaic systems, electric vehicle charging stations, variable speed machine tools, UPS systems, data centers, elevator controls, cranes, electronic equipment on construction sites, and laboratory test setups.

Product Variants
New EFI B and B+ types are available with various configurations and packaging options. The document lists specific models with their respective code numbers, weights, and packaging details.

Accessories
Accessories for the EFI series include auxiliary switches (PS EFI) for remote signaling of contact conditions, sealing pieces, and shunt trip releases (DA EFI). The auxiliary switch cannot be mounted simultaneously with the DA EFI.

Catalog excerpts

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 B In = 25A, 40A, 63A, IAn=30mA, 100mA, 300mA 4p B+ In = 25A, 40A, 63A, IAn=30mA, 100mA, 300mA according to breaking times: 4p B, B+ instantaneous, short time delayed (G/KV), selective (S) basic standard for RCCB's AC and A type additional requirements for type B VDE standard for B+ requirements ( 20kHz) according to the number of poles: ^ 2p Standards IEC/EN 61008-1 IEC/EN 62423 VDE 0664-400 B+ Mode of operation Pure a.c. and pulsating d.c. type residual current sensitivity, A voltage independent Smooth d.c. current sensitivity: B, B+ voltage dependent Minimum operating voltage: 50V Typical applications Which are vulnerable to smooth d.c. residual currents: ■ Frequency converters, ■ Photovoltaic systems, a.c side, ■ Charging stations for electric vehicles, ■ Variable speed machine tools, ■ UPS, computer data centres ■ Elevator controls, ■ Cranes of all kinds ■ Electronic equipment on construction sites, ■ Test set-ups in laboratories, ■ Installation in general where we can expect d.c. smooth direct residual currents, etc.

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