General specifications
Product name
Eaton Moeller® series ZB Thermal overload relay
Part no.
ZB32-38
EAN
4015081120284
Product Length/Depth
96 millimetre
Product height
98 millimetre
Product width
45 millimetre
Product weight
0.192 kilogram
Certifications
UL Category Control No.: NKCR
CSA-C22.2 No. 60947-4-1-14
CE
CSA
IEC/EN 60947-4-1
UL File No.: E29184
IEC/EN 60947
CSA File No.: 012528
CSA Class No.: 3211-03
VDE 0660
UL 60947-4-1
UL
Product Tradename
ZB
Product Type
Thermal overload relay
Product Sub Type
None
Catalog Notes
Rated operational current: Switch-on and switch-off conditions based on DC-13, time constant as specified.
PTB: -5 °C - +55 °C
Ambient operating temperature (according to IEC/EN 60947)
Ambient air temperature: Operating range to IEC/EN 60947, PTB: -5°C to +55°C
Features & Functions
Features
Test/off button
Phase-failure sensitivity (according to IEC/EN 60947, VDE 0660 Part 102)
Trip-free release
Reset pushbutton manual/auto
General information
Ambient operating temperature - min
-25 °C
Ambient operating temperature - max
40 °C
Class
CLASS 10 A
Climatic proofing
Damp heat, cyclic, to IEC 60068-2-30
Damp heat, constant, to IEC 60068-2-78
Degree of protection
IP20
Frame size
ZB32
Mounting method
Direct mounting
Direct attachment
Overload release current setting - min
32 A
Overload release current setting - max
38 A
Overvoltage category
III
Pollution degree
3
Product category
Overload relay ZB up to 150 A
Accessories
Protection
Finger and back-of-hand proof, Protection against direct contact when actuated from front (EN 50274)
Rated impulse withstand voltage (Uimp)
6000 V AC
4000 V (auxiliary and control circuits)
Shock resistance
10 g, Mechanical, Sinusoidal, Shock duration 10 ms
Suitable for
Branch circuits, (UL/CSA)
Temperature compensation
≤ 0.25 %/K, residual error for T > 40°
Continuous
Terminal capacities
Terminal capacity (flexible with ferrule)
1 x (6 - 16) mm², Main cables
2 x (0.75 - 2.5) mm², Control circuit cables
1 x (0.75 - 2.5) mm², Control circuit cables
Terminal capacity (solid)
2 x (0.75 - 4) mm², Control circuit cables
1 x (6 - 16) mm², Main cables
1 x (0.75 - 4) mm², Control circuit cables
Terminal capacity (solid/stranded AWG)
2 x (18 - 14), Control circuit cables
10 - 6, Main cables
Terminal capacity (stranded)
1 x 16 mm², Main cables
Stripping length (main cable)
10 mm
Stripping length (control circuit cable)
8 mm
Screw size
M4, Terminal screw
M3.5, Terminal screw, Control circuit cables
Screwdriver size
2, Terminal screw, Pozidriv screwdriver
1 x 6 mm, Terminal screw, Standard screwdriver
Tightening torque
3 Nm, Screw terminals, Main cables
1.2 Nm, Screw terminals, Control circuit cables
Electrical rating
Conventional thermal current ith of auxiliary contacts (1-pole, open)
6 A
Rated operational current (Ie) at AC-15, 120 V
1.5 A
Rated operational current (Ie) at AC-15, 220 V, 230 V, 240 V
1.5 A
Rated operational current (Ie) at AC-15, 380 V, 400 V, 415 V
0.9 A
Rated operational current (Ie) at DC-13, 110 V
0.4 A
Rated operational current (Ie) at DC-13, 220 V, 230 V
0.2 A
Rated operational current (Ie) at DC-13, 24 V
0.9 A
Rated operational current (Ie) at DC-13, 60 V
0.75 A
Rated operational voltage (Ue) - max
690 V
Safe isolation
440 V AC, Between main circuits, According to EN 61140
440 V AC, Between auxiliary contacts and main contacts, According to EN 61140
240 V AC, Between auxiliary contacts, According to EN 61140
Switching capacity (auxiliary contacts, pilot duty)
B600 at opposite polarity, AC operated (UL/CSA)
R300, DC operated (UL/CSA)
B300 at opposite polarity, AC operated (UL/CSA)
Voltage rating - max
600 V AC
Short-circuit rating
Short-circuit current rating (basic rating)
5 kA, SCCR (UL/CSA)
150 A, max. Fuse, SCCR (UL/CSA)
Short-circuit protection rating
125 A gG/gL, Fuse, Type “1” coordination
63 A gG/gL, Fuse, Type “2” coordination
Max. 6 A gG/gL, fuse, Without welding, Auxiliary and control circuits
Contacts
Number of auxiliary contacts (change-over contacts)
0
Number of auxiliary contacts (normally closed contacts)
1
Number of auxiliary contacts (normally open contacts)
1
Number of contacts (normally closed contacts)
1
Number of contacts (normally open contacts)
1
Design verification
Equipment heat dissipation, current-dependent Pvid
8.4 W
Heat dissipation capacity Pdiss
0 W
Heat dissipation per pole, current-dependent Pvid
2.8 W
Rated operational current for specified heat dissipation (In)
38 A
Static heat dissipation, non-current-dependent Pvs
0 W
10.2.2 Corrosion resistance
Meets the product standard's requirements.
10.2.3.1 Verification of thermal stability of enclosures
Meets the product standard's requirements.
10.2.3.2 Verification of resistance of insulating materials to normal heat
Meets the product standard's requirements.
10.2.3.3 Resist. of insul. mat. to abnormal heat/fire by internal elect. effects
Meets the product standard's requirements.
10.2.4 Resistance to ultra-violet (UV) radiation
Meets the product standard's requirements.
10.2.5 Lifting
Does not apply, since the entire switchgear needs to be evaluated.
10.2.6 Mechanical impact
Does not apply, since the entire switchgear needs to be evaluated.
10.2.7 Inscriptions
Meets the product standard's requirements.
10.3 Degree of protection of assemblies
Does not apply, since the entire switchgear needs to be evaluated.
10.4 Clearances and creepage distances
Meets the product standard's requirements.
10.5 Protection against electric shock
Does not apply, since the entire switchgear needs to be evaluated.
10.6 Incorporation of switching devices and components
Does not apply, since the entire switchgear needs to be evaluated.
10.7 Internal electrical circuits and connections
Is the panel builder's responsibility.
10.8 Connections for external conductors
Is the panel builder's responsibility.
10.9.2 Power-frequency electric strength
Is the panel builder's responsibility.
10.9.3 Impulse withstand voltage
Is the panel builder's responsibility.
10.9.4 Testing of enclosures made of insulating material
Is the panel builder's responsibility.
10.10 Temperature rise
The panel builder is responsible for the temperature rise calculation. Eaton will provide heat dissipation data for the devices.
10.11 Short-circuit rating
Is the panel builder's responsibility. The specifications for the switchgear must be observed.
10.12 Electromagnetic compatibility
Is the panel builder's responsibility. The specifications for the switchgear must be observed.
10.13 Mechanical function
The device meets the requirements, provided the information in the instruction leaflet (IL) is observed.

Technical data ETIM 9.0

Low-voltage industrial components (EG000017) / Thermal overload relay (EC000106)
Electric engineering, automation, process control engineering / Low-voltage switch technology / Overload protection device / Thermal overload relay (ecl@ss13-27-37-15-01 [AKF075019])
Adjustable current range
32 - 38 A
Max. rated operation voltage Ue
690 V
Mounting method
Direct attachment
Type of electrical connection of main circuit
Screw connection
Number of auxiliary contacts as normally closed contact
1
Number of auxiliary contacts as normally open contact
1
Number of auxiliary contacts as change-over contact
0
Release class
CLASS 10 A
Reset function input
No
Reset function automatic
Yes
Reset function push-button
Yes