Technical data

65
Protective Devices
Combined RCD/MCB Devices mRB, 3+N-pole
• Combined RCD/MCB device
• Line voltage-independent tripping
• Compatible with standard busbar
• Twin-purpose terminal (lift/open-mouthed) above and below
• Busbar positioning optionally above or below
• Free terminal space despite installed busbar
• Guide for secure terminal connection
• Switching toggle (MCB component) in colour designating the rated current
• Contact position indicator red - green
• Fault current tripping indicator white - blue
• Comprehensive range of accessories suitable for subsequent installation
• Type -A: Protects against special forms of residual pulsating DC which
have have not been smoothed
Accessories:
Auxiliary switch for
subsequent installation ZP-IHK 286052
ZP-NHK 248437
ZP-WHK 286053
Shunt trip release ZP-ASA/.. 248438, 248439
Switching interlock IS/SPE-1TE 101911
Technical Data
Electrical
Design according to IEC/EN 61009
Current test marks as printed onto the device
Tripping
line voltage-independent instantaneous 250A (8/20µs)
surge current-proof
Rated voltage U
e
230/400V; 50Hz
Rated tripping current I
Δn
30, 100, 300 mA
Rated non-tripping current I
Δno
0.5 I
Δn
Sensitivity AC and pulsating DC
Selectivity class 3
Rated breaking capacity
mRB6 6 kA
mRB4 4.5 kA
Rated current 6 - 32 A
Rated peak withstand voltage U
imp
4 kV (1.2/50µs)
Characteristic B, C, D
Maximum back-up fuse (short circuit) 100 A gL/gG
Endurance electrical comp. ≥ 4,000 operating cycles
mechanical comp. ≥ 20,000 operating cycles
Mechanical
Frame size 45 mm
Device height 80 mm
Device width 70 mm (4MU)
Mounting 3-position DIN rail clip,
permits removal from
existing busbar system
Upper and lower terminals open mouthed/lift terminals
Terminal protection finger and hand touch safe,
VBG4, ÖVE-EN 6
Terminal capacity 1 - 25 mm
2
Busbar thickness 0.8 - 2 mm
Degree of protection switch IP20
Degree of protection, built-in IP40
Tripping temperature -25°C to +40°C
Storage- and transport temperature -35°C to +60°C
Resistance to climatic conditions acc. to IEC 68-2
(25...55°C / 90...95% RH)
Connection diagram
3+N-pole
Dimensions (mm)
Tripping Characteristic mRB, Characteristics B, C and D