RCCB VFL001 — Residual Current Circuit Breaker

Overview

The Kuangya VFL001 is a Type A RCCB designed to detect sinusoidal AC and pulsating DC residual currents, providing reliable protection against electric shock and electrical fires. It also supports Type AC operation for AC-only applications. With 2P/4P configurations, rated current from 16A to 100A, and sensitivities of 10/30/100/300 mA, VFL001 fits residential, commercial and light industrial distribution boards. Popular selections include rccb 16a 30ma, rccb 25a 30ma, rccb 40a 30ma, and rccb 63a 30ma.

How it works

When the residual current exceeds the preset threshold (IΔn), the internal toroidal sensor and trip unit of this type a rccb actuate the mechanism to disconnect the circuit within the specified breaking time. Short-time delay (ASi/G/KV) and selective (S) characteristics are available to coordinate with upstream/downstream devices and reduce nuisance tripping.

Key Features

• Type A / AC residual-current detection (AC + pulsating DC for Type A).
• Poles: 2P / 4P; In: 16, 25, 32, 40, 63, 80, 100 A.
• IΔn options: 10 mA (2P/4P 16–40 A), 30 mA, 100 mA, 300 mA.
• Ue: 240 V~ (2P) / 415 V~ (4P); Ui: 500 V; 50/60 Hz.
• IΔm: 500 A (In 16–40 A), 630 A (63 A), 800 A (80 A), 1000 A (100 A).
• Inc = IΔc: 6 kA or 10 kA (with upstream SCPD coordination).
• Uimp: 6 kV; dielectric test 2.5 kV (1 min at power freq.).
• Endurance: ≥20,000 mechanical / ≥10,000 electrical operations.
• IP20 terminals with cable/pin-type busbar connection; DIN rail EN 60715.
• Ambient −25 °C…+55 °C (daily avg ≤35 °C); storage −40 °C…+70 °C.

Technical Data

Standard	IEC/EN 61008-1
Model No.	VFL001
Poles	2P, 4P
Rated current In	16A, 25A, 32A, 40A, 63A, 80A, 100A
Rated Sensitivity IΔn	10 mA (2P/4P 16A–40A), 30 mA, 100 mA, 300 mA
Rated voltage Ue	2P: 240V~    4P: 415V~
Insulation voltage Ui	500 V
Rated frequency	50/60 Hz
Rated residual making & breaking capacity IΔm	500 A (In=16A, 25A, 32A, 40A); 630 A (In=63A); 800 A (In=80A); 1000 A (In=100A)
Short-circuit current Inc = IΔc	6000 A, 10000 A
Type (waveform sensed)	AC, A
Tripping time	Instantaneous / Short time delay / Selective
Break time under IΔn	≤100 ms (normal type)
Short time delay	10–300 ms (ASi, G, KV type)
Selective type	150–500 ms (S type)
Rated impulse withstand voltage (1.2/50) Uimp	6 kV
Dielectric test voltage at ind. freq. (1 min)	2.5 kV
Pollution degree	2
Electrical life	≥2000
Mechanical life	≥2000
Fault current indicator	Yes
Terminal protection degree	IP20
Ambient temperature (daily avg ≤35 °C)	−25 °C to +55 °C
Storage temperature	−40 °C to +70 °C
Terminal connection type	Cable / Pin-type busbar
Terminal size top/bottom for cable	25–35 mm² (typ.); 18–3 / 18–2 AWG notes per size class
Terminal size top/bottom for busbar	Pin-type; 10/16 mm² (typ.); 18–8 / 18–5 AWG notes
Tightening torque	2.5 N·m (≈ 22 in-lbs)
Mounting	On DIN rail EN 60715 (35 mm) by fast clip device
Connection	From top and bottom

Applications

• Residential distribution boards (bathrooms, kitchens, EV chargers with proper coordination).
• Commercial buildings (shops, offices, public facilities) requiring type a rccb for mixed AC/pulsating DC loads.
• Light industrial panels and machinery control, with selective or short-time delayed versions for coordination.

Installation & Selection Guide

1. Select the pole number (2P/4P) according to system voltage: 240 V~ (single-phase) or 415 V~ (three-phase).
2. Choose IΔn by application: 10/30 mA for personal protection; 100/300 mA for fire protection/selectivity.
3. For high inrush or EMC-sensitive loads, consider short-time delay (ASi/G/KV) or Selective S types.
4. Coordinate with upstream SCPD to meet Inc = IΔc 6 kA / 10 kA requirements.
5. Observe ambient limits (−25…+55 °C, daily avg ≤35 °C) and torque settings (2.5 N·m).

Certifications & Standards

Compliant with IEC/EN 61008-1; CE & UKCA approvals. Terminal safety to IP20; pollution degree 2.

FAQ

What is the difference between Type A and Type AC?

Type AC detects sinusoidal AC only; Type A also detects pulsating DC components, which are common with modern power electronics.

When should I use short-time delay or S selective types?

Use short-time delay (10–300 ms) to ride through transient leakage or inrush; use S type (150–500 ms) to coordinate with downstream RCCBs and avoid nuisance tripping.

What upstream protection is required?

Select an SCPD so that the conditional residual short-circuit current rating Inc = IΔc of 6 kA or 10 kA is respected under fault conditions.