Print Page

Font Size:
Product

Product Features

Earth-Leakage Relays

  • Unlike on an earth leakage breaker, there is no interruption performed and there is only an earth leakage detection function.
    Detection of the earth leakage is performed (ZCT) and then a signal is sent when there is earth leakage (relay part).
    It is used with a combination of a ZCT (zero-phase current transformer) and a relay.

Structure of Earth-Leakage Relay

Lineup

ModelInterchangeable leakage relays (*1)
Electrical self-hold typeMechanical self-hold type
 Hole diameter (mm)NV-ZBANV-ZSA
Model of ZCT
(*5)
15ZT15BZT15B
30ZT30BZT30B
40ZT40BZT40B
60ZT60BZT60B
80ZT80BZT80B
100ZT100BZT100B
ImageNV-ZBANV-ZSA
Wiring system3φ4W, 3φ3W, 1φ3W, 1φ2W
Control voltage
AC (V)
JIS100・200 selectable100・200 selectable
200・415 selectable
UL/JIS(*2)
UL/CE(*3)
JISHigh
speed
type
Rated sensitivity current (mA)30
100・200
・500
selectable
100・200
500
selectable
30
100・200
・500
selectable
100・200
500
selectable
Max. operating time (s)0.10.1
Delay
type
Rated sensitivity current (mA)100・200・500 selectable100・200・500 selectable
(200・500・1000 selectable)
Operating time (s)(*4)0.3・0.8
・1.6 selectable
0.3・0.8
・1.6 selectable
Inertial non-operating time (s) or longer than (s)0.1・0.5・1.10.1・0.5・1.1
UL/JISHigh
speed
type
Rated sensitivity current (mA)
Max. operating time (s)
Delay
type
Rated sensitivity current (mA)
Max. operating time (s)(*4)
Inertial non-operating time (s) or longer than (s)
UL/CEHigh
speed
type
Rated sensitivity current (mA)
Max. operating time (s) at 5IΔn
Delay
type
Rated sensitivity current (mA)
Max. operating time (s) at 5IΔn (*4)
Inertial non-operating time (s) at 5IΔn
Earth leakage indicationElectric type (LED)Mechanical type (button)
Resetting methodPush button or control power
switch off
Push button
(combined with earth leakage indicator)
Built-in contactConfiguration1c1a1c
Continuous current
capacity (A)
55
Contact capacity (A)
 cosφ=1
L/R=0
cosφ=0.4
L/R=0.007
AC100V52
AC200V52
DC24V52
 cosφ=1
L/R=0
cosφ=0.4
L/R=0.007
AC100V53
AC200V32
AC415V21
DC30V43
DC100V0.40.4
DC200V0.20.2
ConnectionFront●Clamp terminal●Clamp terminal
Rear●Clamp terminal
Mass (kg)Relay0.3
Subscribe
Receive the latest headlines, right to your inbox