Undervoltage release, 48VAC, +2early N/OOptional 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: for interlocking and load-shedding circuits, as well as for early-make of the undervoltage release in main-switch applications. For use with Emergency-Stop devices in conjunction with emergency-stop button. when the shunt release is energized, accidental contact with the main contacts of the switch during attempts to switch on is safely prevented. Early-make of auxiliary contacts on switching on (manual operation): approx. 90ms. Undervoltage releases cannot be installed simultaneously with NZM..-XHIV.. early-make auxiliary contact or NZM..-XA.. shunt release. Cannot be used in conjunction with NZM...-XR... remote operator. Can be used for: NZM4(-4), N(N/O)4(-4)
Undervoltage release, 48VAC, +2early N/O
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: for interlocking and load-shedding circuits, as well as for early-make of the undervoltage release in main-switch applications. For use with Emergency-Stop devices in conjunction with emergency-stop button. when the shunt release is energized, accidental contact with the main contacts of the switch during attempts to switch on is safely prevented. Early-make of auxiliary contacts on switching on (manual operation): approx. 90ms. Undervoltage releases cannot be installed simultaneously with NZM..-XHIV.. early-make auxiliary contact or NZM..-XA.. shunt release. Cannot be used in conjunction with NZM...-XR... remote operator. Can be used for: NZM4(-4), N(N/O)4(-4)
| Product range | Accessories |
| Accessories | Undervoltage release |
| Accessories | Undervoltage release with early-make auxiliary contact |
| Standard/Approval | UL/CSA, IEC |
| Construction size | NZM4 |
| Description | Undervoltage release with 2 early-make auxiliary contacts, e.g., for early-make connection of undervoltage release in main switch applications, as well as for interlock and load shedding circuits. For use with emergency-stop devices in connection with an emergency-stop button. When the under-voltage trip is switched off, accidental contact with the circuit breaker’s primary contacts is prevented when switched on. Early-make of auxiliary contacts on switching on (manual operation): approx. 90 ms. Undervoltage releases cannot be installed simultaneously with NZM...-XHIV... early-make auxiliary contact or NZM...-XA... shunt release. Cannot be used in conjunction with NZM...-XR... remote operator. |
| Connection type | With bolt connection |
| Auxiliary contacts | with 2 early-make auxiliary contacts |
| Rated control voltage [Us] | 48 V 50/60 Hz V |
| For use with | NZM4(-4), N(S)4(-4) |
| Rated control voltage [Us
] >AC [Us ] |
48-48 V AC |
| Rated control voltage [Us
] >Rated control voltage [Us] |
48 V 50/60 Hz V |
| Operating range >Drop-out voltage |
0.35 - 0.7 x Us |
| Operating range >Pick-up voltage [x Uc] |
0.85 - 1.1 |
| Power consumption >AC >Pick-up AC |
3.6 VA |
| Power consumption >AC >Sealing AC |
3.6 VA |
| Power consumption >DC >Pick-up DC |
2.5 W |
| Power consumption >DC >Sealing DC |
2.5 W |
| Maximum opening delay (response time until opening of the main contacts) | 23 ms |
| Minimum command time | 10 … 15 ms |
| Solid or flexible conductor, with ferrule | 1 x (0,75 - 2,5) 2 x (0,75 - 2,5) mm2 |
| 10.2 Strength of materials and parts >10.2.2 Corrosion resistance |
1 x (18 … 14) 2 x (18 … 14) AWG |
| 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 |
Meets the product standard´s requirements. |
| 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 |
Does not apply, since the entire switchgear needs to be evaluated. |
| 10.3 Degree of protection of ASSEMBLIES | Meets the product standard´s requirements. |
| 10.4 Clearances and creepage distances | Does not apply, since the entire switchgear needs to be evaluated. |
| 10.5 Protection against electric shock | Meets the product standard´s requirements. |
| 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 | Does not apply, since the entire switchgear needs to be evaluated. |
| 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 | Is the panel builder´s responsibility. |
| 10.11 Short-circuit rating | The panel builder is responsible for the temperature rise calculation. Eaton will provide heat dissipation data for the devices. |
| 10.12 Electromagnetic compatibility | Is the panel builder´s responsibility. The specifications for the switchgear must be observed. |
| 10.13 Mechanical function | Is the panel builder´s responsibility. The specifications for the switchgear must be observed. |
| Rated control supply voltage Us at AC 50HZ | The device meets the requirements, provided the information in the instruction leaflet (IL) is observed. |
| Rated control supply voltage Us at AC 60HZ | 48 - 48 V |
| Rated control supply voltage Us at DC | 48 - 48 V |
| Voltage type for actuating | 0 - 0 V |
| Type of electric connection | AC |
| Number of contacts as normally open contact | Screw connection |
| Number of contacts as normally closed contact | 2 |
| Number of contacts as change-over contact | 0 |
| Delayed | 0 |
| Suitable for power circuit breaker | No |
| Suitable for off-load switch | Yes |
| Suitable for motor safety switch | Yes |
| Suitable for overload relay | No |
| Product Standards | No |
| UL File No. | UL489; CSA-C22.2 No. 5-09; IEC60947, CE marking |
| UL Category Control No. | E140305 |
| CSA File No. | DIHS |
| CSA Class No. | 022086 |
| North America Certification | 1437-01 |
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