Eaton ZB12-0.4 Overload Relay Datasheet
Part no.: ZB12-0,4
Catalog No.: 278433
Alternate Catalog No.: XTOBP40BC1
EL-Nummer (Norway): 4131828
Product Overview
Overload relay, ZB12, with adjustable current range (Ir) from 0.24 to 0.4 A. Features include 1 normally open (N/O) and 1 normally closed (N/C) auxiliary contact, direct mounting, and IP20 protection.
Delivery Program
| Product range | Overload relay ZB up to 150 A |
| Accessories | Overload relays |
| Frame size | ZB12 |
| Phase-failure sensitivity | IEC/EN 60947, VDE 0660 Part 102 |
| Description | Test/off button, Reset pushbutton manual/auto, Trip-free release |
| Mounting type | Direct mounting |
| Adjustable current (Ir) | 0.24 - 0.4 A |
Contact Configuration
Contact sequence: 1 N/O, 1 N/C
Auxiliary contacts:
- N/O = Normally open
- N/C = Normally closed
For use with: DILM7, DILM9, DILM12, DILM15, DIULM7, DIULM9, DIULM12, SDAINLM12, SDAINLM16, SDAINLM22 contactors.
Short-Circuit Protection
| Type "1" coordination | gG/gL, A, 25 |
| Type "2" coordination | gG/gL, A, 2 |
Notes: Observe the maximum permissible fuse of the contactor with direct device mounting.
Notes and Special Features
- Overload release: tripping class 10 A.
- Suitable for protection of Ex e-motors. ATEX certification: II(2)G [Ex d] [Ex e] [Ex px], II(2)D [Ex p] [Ex t]. PTB 10 ATEX 3010.
- Observe manual MN03407005Z-DE/EN.
- Fitted directly to the contactor.
Technical Data - General
| Parameter | Value |
|---|---|
| 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) | -25 - +55 °C |
| Ambient temperature (Enclosed) | -25 - +40 °C |
| Temperature compensation | Continuous |
| Weight | 0.141 kg |
| Mechanical shock resistance | 10 g, Sinusoidal, Shock duration 10 ms |
| Degree of Protection | IP20 |
| Protection against direct contact | Finger and back-of-hand proof |
| Altitude | Max. 2000 m |
Main Conducting Paths
| Parameter | Value |
|---|---|
| Rated impulse withstand voltage (Uimp) | 6000 V (III/3) |
| Rated insulation voltage (Ui) | 690 V |
| Rated operational voltage (Ue) | 690 V AC |
| Safe isolation to EN 61140 (Auxiliary to main) | 440 V AC |
| Safe isolation to EN 61140 (Main circuits) | 440 V AC |
| Temperature compensation residual error (> 40 °C) | ≤ 0.25%/K |
| Current heat loss (3 conductors) | 1.9 W |
| Lower value of the setting range | 5.4 W |
| Terminal capacities (Solid) | 1 x (1-6) mm², 2 x (1-6) mm² |
| Terminal capacities (Flexible with ferrule) | 1 x (1-4) mm², 2 x (1-4) mm² |
| Terminal capacities (Solid or stranded) | AWG 18-8 |
| Terminal screw | M4 |
| Tightening torque | 1.8 Nm |
| Stripping length | 10 mm |
| Tools (Pozidriv screwdriver) | Size 2 |
| Tools (Standard screwdriver) | 1 x 6 mm |
Auxiliary and Control Circuits
| Parameter | Value |
|---|---|
| Rated impulse withstand voltage (Uimp) | 4000 V (III/3) |
| Terminal capacities (Solid) | 1 x (0.75-4) mm², 2 x (0.75-4) mm² |
| Terminal capacities (Flexible with ferrule) | 1 x (0.75-2.5) mm², 2 x (0.75-2.5) mm² |
| Terminal capacities (Solid or stranded) | AWG 2 x (18-14) |
| Terminal screw | M3.5 |
| Tightening torque | 1.2 Nm |
| Stripping length | 8 mm |
| Tools (Pozidriv screwdriver) | Size 2 |
| Tools (Standard screwdriver) | 1 x 6 mm |
| Rated insulation voltage (Ui) | 500 V AC |
| Rated operational voltage (Ue) | 500 V AC |
| Safe isolation to EN 61140 (Auxiliary contacts) | 240 V AC |
| Conventional thermal current (Ith) | 6 A |
| Rated operational current (Ie) AC-15 (Make contact) | 1.5 A @ 120 V, 1.5 A @ 220-240 V, 0.5 A @ 380-415 V, 0.5 A @ 500 V |
| Rated operational current (Ie) AC-15 (Break contact) | 1.5 A @ 120 V, 1.5 A @ 220-240 V, 0.9 A @ 380-415 V, 0.8 A @ 500 V |
| Rated operational current (Ie) DC L/R ≤ 15 ms | 0.9 A @ 24 V, 0.75 A @ 60 V, 0.4 A @ 110 V, 0.2 A @ 220 V |
| Short-circuit rating without welding (max. fuse) | A gG/gL 6 |
Notes: Ambient air temperature: Operating range to IEC/EN 60947, PTB: -5°C to +55°C. Main circuits terminal capacity: For solid and flexible conductors with ferrules, use equal cross-sections when using 2 conductors.
Rating Data and Approvals
Rating data for approved types
| Contact Type | Rating |
|---|---|
| Auxiliary contacts (Pilot Duty) | B300 at opposite polarity, B600 at same polarity |
| Auxiliary contacts (DC operated) | R300 |
Short Circuit Current Rating (SCCR)
| Parameter | Value |
|---|---|
| 600 V High Fault SCCR (fuse) | 100 kA |
| Max. Fuse | 1 Class J/CC |
Approvals
| Parameter | Value |
|---|---|
| Product Standards | IEC/EN 60947-4-1; UL 60947-4-1; CSA C22.2 No. 60947-4-1-14; CE marking |
| UL File No. | E29184 |
| UL Category Control No. | NKCR |
| CSA File No. | 12528 |
| CSA Class No. | 3211-03 |
| North America Certification | UL listed, CSA certified |
| Specially designed for North America | No |
| Suitable for | Branch circuits |
Design Verification as per IEC/EN 61439
Technical data for design verification
| Parameter | Value |
|---|---|
| Rated operational current for specified heat dissipation (In) | 0.4 A |
| Heat dissipation per pole, current-dependent (Pvid) | 1.8 W |
| Equipment heat dissipation, current-dependent (Pvid) | 5.4 W |
| Static heat dissipation, non-current-dependent (Pvs) | 0 W |
| Heat dissipation capacity (Pdiss) | 0 W |
| Operating ambient temperature min. | -25 °C |
| Operating ambient temperature max. | 55 °C |
IEC/EN 61439 design verification
Sections 10.2 through 10.13 generally confirm compliance with product standards or state that responsibility lies with the panel builder, provided Eaton's device information is observed.
Technical Data ETIM 8.0
Category: Low-voltage industrial components (EG000017) / Thermal overload relay (EC000106)
Classification: Electric engineering, automation, process control engineering / Low-voltage switch technology / Overload protection device / Thermal overload relay (ecl@ss10.0.1-27-37-15-01 [AKF075014])
| Parameter | Value |
|---|---|
| Adjustable current range | 0.24 - 0.4 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 (NC) | 1 |
| Number of auxiliary contacts (NO) | 1 |
| Number of auxiliary contacts (Change-over) | 0 |
| Release class | CLASS 10 A |
| Reset function input | No |
| Reset function automatic | Yes |
| Reset function push-button | Yes |
Characteristics
Max. Voltage Rating: 600 V AC
Degree of Protection: IEC: IP20, UL/CSA Type: -
Tripping Characteristics: These curves represent mean values of the spreads at 20 °C ambient air temperature in a cold state. Tripping time depends on response current. When the devices are at operational temperature, the tripping time of the overload relay falls to approximately 25% of the read-off value.
- Curve 1: Minimum level, 3-phase
- Curve 2: Maximum level, 3-phase
- Curve 3: Minimum marker, 2-phase
- Curve 4: Highest marker, 2-phase
The graph displays tripping time in seconds (Y-axis, logarithmic scale from 0.6 to 100) versus setting current (X-axis from 1 to 20). Two curves, labeled "2-phase" and "3-phase", illustrate the tripping behavior.
Dimensions
Overall dimensions: Height 120 mm (4.72"), Width 83 mm (3.27"), Depth 88 mm (3.46").
Mounting dimensions include: 27.5 mm, 39 mm (1.54"), 45 mm (1.77").
The unit features an "OFF" position and a "Reset/ON" button.
Additional Product Information
- IL03407015Z (AWA2300-2114) Overload relay
- IL03407195Z Sealable shroud
- MN03407004Z (AWB2300-1527D/GB) ZB12/XTOB...BC1 and ZB32/XTOB...CC1 overload relays, overload monitoring of Ex e motors - Deutsch / English
Manufacturer: Eaton Industries GmbH
