Delay unitOptional accessories for the circuit-breaker series NZM offers a comprehensive portfolio of application options for use world wide. The mounting is always flexible and easy thanks to the modular function groups. Notes: combination of separate delay unit and special releases. For use with emergency switching off devices in conjunction with Emergency switching off button. Not UL/CSA approved. voltage dips of less than the setting between 0.06-16 s do not cause disconnection of the NZM circuit-breaker or N switch-disconnector. Delay time can be set: 70 ms - 4 s. With external condenser: 30.000 µF ≧ 35 V to 8 s, 90.000 µF ≧ 35 V to 16 s. A special release is required. Cannot be installed simultaneously with separate NZM..-XHIV early-make auxiliary contact or NZM..-XA.. shunt release. Delay unit for separate installation. Fixing: top-hat rail or screws. For other operating voltages use a control transformer. Can be used for: NZM1(-4), 2(-4), 3(-4), 4(-4), N(N/O)1(-4), 2(-4), 3(-4), 4(-4), 50/60 Hz 220V-240V, 380V-440V, 480V-550V, DC/AC 24 V
Delay unit
Optional accessories for the circuit-breaker series NZM offers a comprehensive portfolio of application options for use world wide. The mounting is always flexible and easy thanks to the modular function groups. Notes: combination of separate delay unit and special releases. For use with emergency switching off devices in conjunction with Emergency switching off button. Not UL/CSA approved. voltage dips of less than the setting between 0.06-16 s do not cause disconnection of the NZM circuit-breaker or N switch-disconnector. Delay time can be set: 70 ms - 4 s. With external condenser: 30.000 µF ≧ 35 V to 8 s, 90.000 µF ≧ 35 V to 16 s. A special release is required. Cannot be installed simultaneously with separate NZM..-XHIV early-make auxiliary contact or NZM..-XA.. shunt release. Delay unit for separate installation. Fixing: top-hat rail or screws. For other operating voltages use a control transformer. Can be used for: NZM1(-4), 2(-4), 3(-4), 4(-4), N(N/O)1(-4), 2(-4), 3(-4), 4(-4), 50/60 Hz 220V-240V, 380V-440V, 480V-550V, DC/AC 24 V
| Product range | Accessories |
| Accessories | Undervoltage release |
| Accessories | Undervoltage releases, off-delayed |
| Standard/Approval | IEC |
| Construction size | NZM1/2/3/4 |
| Description | Delay unit for combination with special undervoltage releases. For use with emergency-stop devices in connection with an emergency-stop button. not UL/CSA approved Voltage dips of less than the setting between 0.06 – 16 s do not cause disconnection of the NZM circuit-breaker or N switch-disconnector. Delay time can be set from: 70 ms – 4 s. With additional external capacitor: 30,000 µF ≧ 35 V to 8 s, 90,000 µF ≧ 35 V to 16 s. A special release is required. Cannot be installed simultaneously with separate NZM...-XHIV early-make auxiliary contact or NZM...-XA... shunt release. Delay unit for separate installation. Fixing: top-hat rail or screws. For other operating voltages use a control transformer. |
| Connection type | With bolt connection |
| For use with | NZM1(-4), 2(-4), 3(-4), 4(-4) N(S)1(-4), 2(-4), 3(-4), 4(-4) 50/60 Hz 220 V - 240 V 380 V - 440 V 480 V - 550 V DC/AC 24 V |
| Rated operational voltage [Ue] >Alternating voltage at 50/60 Hz [Ue] |
24, 220 - 550 V AC |
| Rated operational voltage [Ue] >DC [Ue ] |
24 V DC |
| Inrush current (peak value) [Ie ] | < 500 mA |
| Power consumption | 50 VA |
| Delay time [tsd ] | 70 - 4000 ms |
| With additional external capacitor, 90.000 μF ≧ 35 V | 16 s |
| With additional external capacitor, 30.000 μF ≧ 35 V | 8 s |
| Terminal capacities >Solid or flexible conductor, with ferrule |
1 x (0,5 - 2,5) 2 x (0,5 - 1,5) mm2 |
| Terminal capacities | 1 x (20 - 14) 2 x (20 - 16) AWG |
| 10.2 Strength of materials and parts >10.2.2 Corrosion resistance |
Meets the product standard´s requirements. |
| 10.2 Strength of materials and parts >10.2.3.1 Verification of thermal stability of enclosures |
Meets the product standard´s requirements. |
| 10.2 Strength of materials and parts >10.2.3.2 Verification of resistance of insulating materials to normal heat |
Meets the product standard´s requirements. |
| 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 |
Meets the product standard´s requirements. |
| 10.2 Strength of materials and parts >10.2.4 Resistance to ultra-violet (UV) radiation |
Meets the product standard´s requirements. |
| 10.2 Strength of materials and parts >10.2.5 Lifting |
Does not apply, since the entire switchgear needs to be evaluated. |
| 10.2 Strength of materials and parts >10.2.6 Mechanical impact |
Does not apply, since the entire switchgear needs to be evaluated. |
| 10.2 Strength of materials and parts >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 Insulation properties >10.9.2 Power-frequency electric strength |
Is the panel builder´s responsibility. |
| 10.9 Insulation properties >10.9.3 Impulse withstand voltage |
Is the panel builder´s responsibility. |
| 10.9 Insulation properties >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. |
| Rated control supply voltage Us at AC 50HZ | 24 - 550 V |
| Rated control supply voltage Us at AC 60HZ | 24 - 550 V |
| Rated control supply voltage Us at DC | 24 - 24 V |
| Voltage type for actuating | AC/DC |
| Type of electric connection | Screw connection |
| Number of contacts as normally open contact | 0 |
| Number of contacts as normally closed contact | 0 |
| Number of contacts as change-over contact | 0 |
| Delayed | Yes |
| Suitable for power circuit breaker | Yes |
| Suitable for off-load switch | Yes |
| Suitable for motor safety switch | No |
| Suitable for overload relay | No |
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