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B
Motor Protection
Thermal Overload Relays ZE
General
ZB12
ZB32 ZB65 ZB150 Z5-…/FF250 ZW7
Standards IEC/EN 60947, VDE 0660, UL, CSA
Climatic proofing Damp heat, constant, to IEC 60068-2-78; Damp heat, cyclic, to IEC 60068-2-30
Ambient temperature
Open
Enclosed
[°C]
[°F]
[°C]
[°F]
-25…50 °C
-13…122 °F
-25…40 °C
-13…104 °F
-25…55 °C
-13…131 °F
-25…40 °C
-13…104 °F
-25…55 °C
-13…131 °F
-25…40 °C
-13…104 °F
-25…55 °C
-13…131 °F
-25…40 °C
-13…104 °F
-25…50 °C
-13…122 °F
-25…40 °C
-13…104 °F
-25…50 °C
-13…122 °F
-25…40 °C
-13…104 °F
Temperature compensation Continuous
Mounting position See page 83
Weight [kg] 0.09 0.15 0.25 1.64 1.8 0.95
Mechanical shock resistance half-sinusoidal shock 10ms [g] 10 10 10 10 10 10
Degree of protection IP20 IP00 IP00 IP00 IP00 IP00
Protection against direct contact when actuated from
front
Main Contacts
Finger and backof-hand
proof
Finger and backof-hand
proof
Finger and backof-hand
proof
Finger and backof-hand
proof
With terminal
cover
Finger and backof-hand
proof
Rated impulse withstand voltage Uimp [V AC] 6000 6000 6000 6000 8000 6000
Overvoltage category / pollution degree III/3 III/3 III/3 III/3 III/3 III/3
Rated insulation voltage Ui [V AC] 690 690 690 690 1000 690
Rated operational voltage Ue [V AC] 690 690 690 690 1000 690
Safe isolation to VDE 0106 Part 101 and Part 101/A1
Between auxiliary contacts and main contacts
[V AC] 300
440
440
440
440
440
Between the main contacts
[V AC] 300
440
440
440
440
440
Overload relay setting range [A] 0.1 – 9 0.1 – 32 6 – 65 25 – 150 50 – 250 40 – 540
Temperature compensation residual error > 20 °C [% / K] ≤ 0.25 ≤ 0.25 ≤ 0.25 ≤ 0.25 ≤ 0.25 –
Short-circuit protection rating maximum fuse
Current heat loss (3 conductors)
See page 77 See page 78 See page 79 See page 79 See page 80 ➊
Lower value of setting range
[W] 2.5
2.5
3
16
16
3
Upper value of setting range
Terminal capacity
[W] 6
6
7.5
28
28
10
Solid [mm2 ] 2 x (0.75 – 2.5) 2 x (1 – 6) 2 x (1 – 6) 2 x (4 – 16) – –
Flexible without ferrules [mm2 ] – – – – – –
Flexible with ferrule [mm2 ] 2 x (0.5 – 1.5) 2 x (1 – 4)
1 x 25
1 x (4 – 70)
– –
2 x (1 – 6) ➋ 2 x (1 – 10) ➌ 2 x (4 – 50)
Stranded [mm2 ] – – 1 x 35
2 x 10
– – –
Flexible with cable lug [mm2 ] – – – – 95 –
Stranded with cable lug [mm2 ] – – – – 120 –
Solid or stranded [AWG] 18 – 14 14 – 8 14 – 2 2/0 250 MCM –
Flat conductor
Number of segments x width x thickness
[mm] – – – – 6 x 15 x 0.8 ➍ –
Busbar Width [mm] – – – – 20 x 3 –
Push-through opening Ø [mm] – – – – – 27
Terminal screw M3.5 M4 M6 M10 M8 x 25 –
Tightening torque
Tools
[Nm] 1.2 1.8 3.5 10 24 –
Pozidriv screwdriver
[Size] 2
2
2
–
–
–
Standard screwdriver
[mm] 0.8 x 5.5
1 x 6
1 x 6
–
–
–
Hexagon socket-head screw SW [mm] –
–
–
5
13
–
➊ As required by the contactor.
➋ 6 mm 2 flexible with ferrules to DIN 46228.
➌ When using 2 conductors, use identical cross-section.
➍ Fixing with box terminals.
Technical Data
Thermal Overload Relays
B12 moellerNA.com STARTER-CAT-USA-1206
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