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Datasheet generated 2026-10-07
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Motor protection relay ZB150-125

Eaton · Switchgear & Protection · Overload Relays · Ireland · eaton.com
Part Number
ZB150-125  ·  HS 8536.30
Motor protection relay ZB150-125

Eaton ZB150-125 Motor Protection Relay 95-125A, 1N/O+1N/C.

Technical Specifications

Manufacturer part number (MPN)ZB150-125
EAN / GTIN4015082784652
Sales unitpcs
Eaton catalogue number278465
Depth134 mm
Height135 mm
Width118 mm
Weight1.241 kg
CertificationsCSA Class No.: 3211-03; CE; CSA File No.: 012528; IEC/EN 60947; VDE 0660; CSA-C22.2 No. 60947-4-1-14; IEC/EN 60947-4-1; CSA; UL 60947-4-1; UL; UL File No.: E29184; UL Category Control No.: NKCR
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
Equipment heat dissipation, current-dependent Pvid26.4 W
Heat dissipation per pole, current-dependent Pvid8.8 W
Rated operational current for specified heat dissipation (In)125 A
Conventional thermal current Ith of auxiliary contacts (1-pole, open)6 A
Rated operational current (Ie) at AC-15, 120 V1.5 A
Rated operational current (Ie) at AC-15, 220 V, 230 V, 240 V1.5 A
Rated operational current (Ie) at AC-15, 380 V, 400 V, 415 V0.9 A
Rated operational current (Ie) at DC-13, 110 V0.4 A
Rated operational current (Ie) at DC-13, 220 V, 230 V0.2 A
Rated operational current (Ie) at DC-13, 24 V0.9 A
Rated operational current (Ie) at DC-13, 60 V0.75 A
Rated operational voltage (Ue) - max1000 V
Safe isolation240 V AC, Between auxiliary contacts, According to EN 61140; 440 V AC, Between main circuits, According to EN 61140; 440 V, Between auxiliary contacts and main contacts, According to EN 61140
Switching capacity (auxiliary contacts, pilot duty)R300, DC operated (UL/CSA); B300 at opposite polarity, AC operated (UL/CSA); B600 at opposite polarity, AC operated (UL/CSA)
Voltage rating - max600 VAC
FeaturesPhase-failure sensitivity (according to IEC/EN 60947, VDE 0660 Part 102); Test/off button; Reset pushbutton manual/auto; Trip-free release
Ambient operating temperature - max55 °C
Ambient operating temperature - min-25 °C
Ambient operating temperature (enclosed) - max40 °C
Ambient operating temperature (enclosed) - min-25 °C
ClassCLASS 10 A / IEC 60947-4-1, 8.2.1.5.1.1. c) 4 min
Climatic proofingDamp heat, constant, to IEC 60068-2-78; Damp heat, cyclic, to IEC 60068-2-30
Degree of protectionIP00
Frame sizeZB150
Mounting methodDirect attachment; Direct mounting
Overload release current setting - max125 A
Overload release current setting - min95 A
Overvoltage categoryIII
Pollution degree3
Product categoryAccessories Overload relay ZB up to 150 A
ProtectionFinger and back-of-hand proof, Protection against direct contact when actuated from front (EN 50274)
Rated impulse withstand voltage (Uimp)4000 V (auxiliary and control circuits); 8000 V AC
Shock resistance10 g, Mechanical, Sinusoidal, Shock duration 10 ms
Suitable forBranch circuits, (UL/CSA)
Temperature compensation≤ 0.25 %/K, residual error for T > 40°; Continuous
Short-circuit current rating (basic rating)500 A Class J, max. Fuse, SCCR (UL/CSA); 500 A, max. CB, SCCR (UL/CSA); 10 kA, SCCR (UL/CSA)
Short-circuit protection ratingMax. 6 A gG/gL, fuse, without welding, Auxiliary and control circuits; 315 A gG/gL, Fuse, Type “1” coordination; 250 A gG/gL, Fuse, Type “2” coordination; Information on Type "1" and Type"2" coordination applies to 100 kA and 690 V
Screw sizeM10, Terminal screw, Main cables; M3.5, Terminal screw, Control circuit cables; 5 mm AF, Hexagon socket-head spanner, Terminal screw, Main cables
Screwdriver size1 x 6 mm, Terminal screw, Control circuit cables, Standard screwdriver; 2, Terminal screw, Control circuit cables, Pozidriv screwdriver
Stripping length (control circuit cable)8 mm
Stripping length (main cable)24 mm
Terminal capacity (flexible with ferrule)1 x (4 - 70) mm², Main cables; 1 x (0.75 - 2.5) mm², Control circuit cables; 2 x (4 - 70) mm², Main cables; 2 x (0.75 - 2.5) mm², Control circuit cables
Terminal capacity (solid)2 x (0.75 - 4) mm², Control circuit cables; 1 x (4 - 16) mm², Main cables; 1 x (0.75 - 4) mm², Control circuit cables; 2 x (4 - 16) mm², Main cables
Terminal capacity (solid/stranded AWG)2 x (18 - 14), Control circuit cables; 3/0, Main cables
Terminal capacity (stranded)1 x (16 - 70) mm², Main cables; 2 x (16 - 70) mm², Main cables
Tightening torque1.2 Nm, Screw terminals, Control circuit cables; 10 Nm, Screw terminals, Main cables
Number of auxiliary contacts as normally open contact1
Number of auxiliary contacts as normally closed contact1
Release classCLASS 10
Type of electrical connection of main circuitScrew connection
Max. rated operation voltage Ue1000 V
Adjustable current range95–125 A
Reset function inputNo
Reset function automaticYes
Reset function push-buttonYes
Country of originGermany

Properties

MOQ1

Cross-References

Attached Documents