Product range	ZW7 current transformer-operated overload relays
Description	Test/off button Reset pushbutton manual/auto Trip-free release Protection with heavy starting duty
Mounting type	Separate mounting
Overload releases [Ir ]
Contact sequence	110 - 160 A
N/O = Normally open
N/C = Normally closed
Notes	1 N/O
Standards	1 N/C
Climatic proofing	The main current parameters are defined by the main current wiring which is used.
Ambient temperature >Open
Ambient temperature >Enclosed	IEC/EN 60947, VDE 0660, UL, CSA
Temperature compensation	Damp heat, constant, to IEC 60068-2-78 Damp heat, cyclic, to IEC 60068-2-30
Mounting position	-25 - +50 °C
Weight	- 25 - 40 °C
Mechanical shock resistance	Continuous
Degree of Protection	As required
Protection against direct contact when actuated from front (EN 50274)	0.8 kg
Altitude	10 Sinusoidal Shock duration 10 ms g
Rated impulse withstand voltage [Uimp]	IP00
Overvoltage category/pollution degree	Finger and back-of-hand proof
Rated insulation voltage [Ui ]	Max. 2000 m
Rated operational voltage [Ue]
Safe isolation to EN 61140 >Between auxiliary contacts and main contacts	8000 V AC
Safe isolation to EN 61140 >Between main circuits	III/3
Short-circuit protection Maximum fuse	1000 V
Current heat loss (3 conductors) >Lower value of the setting range	1000 V AC
Current heat loss (3 conductors) >Maximum setting	440 V AC
Push-through opening [⌀]	440 V AC
Rated impulse withstand voltage [Uimp]	With overload relay in conjunction with a transformer as required for the contactor
Overvoltage category/pollution degree	3 W
Terminal capacities >Solid	10 W
Terminal capacities >Flexible with ferrule	27 mm
Terminal capacities >Solid or stranded
Terminal screw	4000 V
Tightening torque	III/3
Stripping length	1 x (0.75 - 4) 2 x (0.75 - 4) mm2
Tools >Pozidriv screwdriver	1 x (0.75 - 2.5) 2 x (0.75 - 2.5) mm2
Tools >Standard screwdriver	2 x (18 - 14) AWG
Rated insulation voltage [Ui ]	M3.5
Rated operational voltage [Ue ]	1.2 Nm
Safe isolation to EN 61140 >between the auxiliary contacts	8 mm
Conventional thermal current [Ith ]	2 Size
Rated operational current [Ie ] >AC-15 >Make contact >120 V [Ie ]	1 x 6 mm
Rated operational current [Ie ] >AC-15 >Make contact >220 V 230 V 240 V [Ie ]	500 V AC
Rated operational current [Ie ] >AC-15 >Make contact >380 V 400 V 415 V [Ie ]	500 V AC
Rated operational current [Ie ] >AC-15 >Make contact >500 V [Ie ]	240 V AC
Rated operational current [Ie ] >AC-15 >Break contact >120 V [Ie ]	6 A
Rated operational current [Ie ] >AC-15 >Break contact >220 V 230 V 240 V [Ie ]	1.5 A
Rated operational current [Ie ] >AC-15 >Break contact >380 V 400 V 415 V [Ie ]	1.5 A
Rated operational current [Ie ] >AC-15 >Break contact >500 V [Ie ]	0.5 A
Rated operational current [Ie ] >DC L/R ≦ 15 ms	0.5 A
Rated operational current [Ie ] >DC L/R ≦ 15 ms >24 V [Ie ]	1.5 A
Rated operational current [Ie ] >DC L/R ≦ 15 ms >60 V [Ie ]	1.5 A
Rated operational current [Ie ] >DC L/R ≦ 15 ms >110 V [Ie ]	0.9 A
Rated operational current [Ie ] >DC L/R ≦ 15 ms >220 V [Ie ]	0.8 A
Short-circuit rating without welding >max. fuse	Switch-on and switch-off conditions based on DC-13, time constant as specified.
Auxiliary contacts >Pilot Duty >AC operated	0.9 A
Auxiliary contacts >Pilot Duty >DC operated	0.75 A
Rated operational current for specified heat dissipation [In]	0.4 A
Heat dissipation per pole, current-dependent [Pvid]	0.2 A
Equipment heat dissipation, current-dependent [Pvid]	6 A gG/gL
Static heat dissipation, non-current-dependent [Pvs]
Heat dissipation capacity [Pdiss]	Ambient temperature: Operating range to IEC/EN 60947, PTB: -5°C to +50°C Terminal capacities Main circuits solid and flexible with ferrule: When connecting 2 conductors, only the following combinations are admissible: Rated operational current: Making and breaking currents to DC-13, time constant as stated Short-circuit rating: See transparent overlay "Fuses" for time/current characteristics (Please enquire)
Operating ambient temperature min.
Operating ambient temperature max.	B300 at opposite polarity B600 at same polarity
10.2 Strength of materials and parts >10.2.2 Corrosion resistance	R300
10.2 Strength of materials and parts >10.2.3.1 Verification of thermal stability of enclosures
10.2 Strength of materials and parts >10.2.3.2 Verification of resistance of insulating materials to normal heat	160 A
10.2 Strength of materials and parts >10.2.3.3 Verification of resistance of insulating materials to abnormal heat and fire due to internal electric effects	2.1 W
10.2 Strength of materials and parts >10.2.4 Resistance to ultra-violet (UV) radiation	6.3 W
10.2 Strength of materials and parts >10.2.5 Lifting	0 W
10.2 Strength of materials and parts >10.2.6 Mechanical impact	0 W
10.2 Strength of materials and parts >10.2.7 Inscriptions	-25 °C
10.3 Degree of protection of ASSEMBLIES	+50 °C
10.4 Clearances and creepage distances
10.5 Protection against electric shock	Meets the product standard´s requirements.
10.6 Incorporation of switching devices and components	Meets the product standard´s requirements.
10.7 Internal electrical circuits and connections	Meets the product standard´s requirements.
10.8 Connections for external conductors	Meets the product standard´s requirements.
10.9 Insulation properties >10.9.2 Power-frequency electric strength	Meets the product standard´s requirements.
10.9 Insulation properties >10.9.3 Impulse withstand voltage	Does not apply, since the entire switchgear needs to be evaluated.
10.9 Insulation properties >10.9.4 Testing of enclosures made of insulating material	Does not apply, since the entire switchgear needs to be evaluated.
10.10 Temperature rise	Meets the product standard´s requirements.
10.11 Short-circuit rating	Does not apply, since the entire switchgear needs to be evaluated.
10.12 Electromagnetic compatibility	Meets the product standard´s requirements.
10.13 Mechanical function	Does not apply, since the entire switchgear needs to be evaluated.
Adjustable current range	Does not apply, since the entire switchgear needs to be evaluated.
Max. rated operation voltage Ue	Is the panel builder´s responsibility.
Mounting method	Is the panel builder´s responsibility.
Type of electrical connection of main circuit	Is the panel builder´s responsibility.
Number of auxiliary contacts as normally closed contact	Is the panel builder´s responsibility.
Number of auxiliary contacts as normally open contact	Is the panel builder´s responsibility.
Number of auxiliary contacts as change-over contact	The panel builder is responsible for the temperature rise calculation. Eaton will provide heat dissipation data for the devices.
Release class	Is the panel builder´s responsibility. The specifications for the switchgear must be observed.
Reset function input	Is the panel builder´s responsibility. The specifications for the switchgear must be observed.
Reset function automatic	The device meets the requirements, provided the information in the instruction leaflet (IL) is observed.
Reset function push-button
Product Standards
UL File No.	110 - 160 A
UL Category Control No.	690 V
CSA File No.	Separate positioning
CSA Class No.	Screw connection
North America Certification	1
Specially designed for North America	1
Suitable for	0
Max. Voltage Rating	Other
Degree of Protection	No
Characteristic curve	Yes
Characteristic curve	Yes

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