Isolator Switch

ETD1-125 Isolators, designed for circuits up to 125A, are manually operated switch disconnectors capable of making, carrying, and breaking current under normal circuit conditions. while maintaining short-circuit current withstand capacity for specified durations.

These devices ensure safe circuit de-energization for maintenance/service operations and serve as reliable Main Switch for enclosures, distribution boards, or consumer units.

Current ratings: 25A to 125A
Poles: 1P, 2P, 3P, 4P
Utilization category: AC-22A
Standard single-screw terminals

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Porduct Overview

IP20 protection:
Finger protected connection terminals.
Standard:
IEC 60947-3: Low-voltage switchgear and controlgear -Part 3.
Contact position indication:
Reliable recognition of the switching status through red/green position indicating device.
RoHS compliant:
ETEK uses environmentally friendly state-of-the-art housing material. With the latest generation of halogen free thermoplastics for isolator switch, it is now possible to recycle the isolator switch completely which reduces environmental pollution. T Series entire range of circuit protection devices conform to RoHS Standards.

Product Tips

Wiring Diagram

Dimension (mm)

Technical Data

Technical Data
Standard	IEC/EN 60947-3
Method of operation	Dependent manual operation
No. of poles	1P, 2P,3P,4P
Insulation voltage (Ui)	500V
Rated voltage (Ue)	220/230/240V and 380/400/415V for 1P
Rated voltage (Ue)	380/400/415V for 2P/3P/4P
Rated frequency	50/60Hz
Rated currents (In)	25,32,40,50,63,80,100,125A
Utilization category	AC-22A
Short-time withstand current (Icw)	2500A/1s
Rated short-circuit making capacity (Icm)	3550A
Rated impulse withstand voltage (Uimp) (1.2/50μs)	6kV
Dielectric test voltage	2kV (50/60Hz, 1 min.)）
Fire resistance (glow-wire test)	960±15°C(Enclosure)
Fire resistance (glow-wire test)	650±10°C (Handle)
Electrical life	2000 cycles
Mechanical life	1,0000 cycles
Contact position indicator	green OFF/ red ON
Protection degree	IP20 for front cover
Ambient temperature	-5°C~+40°C
Storage temperature	-25°C~+70°C
Terminal connection type	Cable/Pin-type busbar
Max. terminal size for cable	35mm² flexible/50mm² rigid
Max. tightening torque	3.5N.m
Installation	Mounting on 35mm DIN rail
Incoming method	Bi-directional

Utilization Categories for Low Voltage Switchgear According to IEC60947-3
Current	Utilization categories		Typical application
Current	Category A	Category B	Typical application
AC	AC-20A	AC-20B	Connecting and disconnecting under no-load conditions
	AC-21A	AC-21B	Switching of resistive loads including moderate overloads
	AC-22A	AC-22B	Switching of mixed resistive and inductive loads,including moderate overloads
	AC-23A	AC-23B	Switching of motor loads or other highly inductive loads
	AC-23Ae	AC-23Be	Switching of motor loads with higher locked rotor currents
DC	DC-20A	DC-20B	Connecting and disconnecting under no-load conditions
	DC-21A	DC-21B	Switching of resistive loads including moderate overloads
	DC-22A	DC-22B	Switching of mixed resistive and inductive loads, including moderate overloads (e.g. shunt motors)
	DC-23A	DC-23B	Switching of highly inductive loads (e.g. series motors)