The Type B designation means it detects smooth DC residual currents, AC residual currents, and high-frequency AC components, making it suitable for circuits with variable-speed drives, UPS systems, or PV inverters that can generate DC fault currents a standard AC-only RCCB would miss. This is a short-time delayed design (also marked as K-type or S-type in some catalogs), meaning it withstands brief surge currents up to 3 kA without nuisance tripping — useful on circuits with motor starts or capacitor switching where a standard instantaneous RCCB would drop out.
Depth is 70 mm, matching the typical 70 mm installation depth for SENTRON modular devices. Silicon-free construction is confirmed, relevant for automotive or coating lines where silicone outgassing can cause adhesion failures.