Undervoltage release for NZM2/3, 48AC, Push-in terminalsOptional 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: Undervoltage releases with push-in terminals. Non-delayed disconnection of circuit-breaker NZM when control voltage drops below 35 - 70 % Us. For use with emergency switching off devices in conjunction with emergency switching off buttom. When the undervoltage release is de-energized, accidental contact with the main contacts of the circuit-breaker dureing attempts to switch on is reliably prevented. Undervoltage release modules cannot be installed simultaneously with early-make contact NZM…-XHIV, shunt release NZM…-XA… or relais modules NZM...-X2A...
Undervoltage release for NZM2/3, 48AC, Push-in terminals
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: Undervoltage releases with push-in terminals. Non-delayed disconnection of circuit-breaker NZM when control voltage drops below 35 - 70 % Us. For use with emergency switching off devices in conjunction with emergency switching off buttom. When the undervoltage release is de-energized, accidental contact with the main contacts of the circuit-breaker dureing attempts to switch on is reliably prevented. Undervoltage release modules cannot be installed simultaneously with early-make contact NZM…-XHIV, shunt release NZM…-XA… or relais modules NZM...-X2A...
| Product range | Accessories |
| Accessories | Undervoltage release |
| Accessories | Undervoltage releases |
| Standard/Approval | UL/CSA, IEC |
| Construction size | NZM2/3 |
| Description | Instantaneous shut-off of the NZM circuit breaker when the control voltage drops below 35 - 70% Us. For use with emergency-stop devices in connection with an emergency-stop button. If the shunt trip is live, contact with the circuit breaker’s primary contacts is prevented when switched on. Undervoltage release modules cannot be installed simultaneously with early-make contact NZM…-XHIV, shunt release NZM…-XA… or relais modules NZM...-X2A... |
| Connection type | with push in terminal |
| Auxiliary contacts | without auxiliary contact |
| Rated control voltage [Us] | 48 V 50/60 Hz V |
| For use with | NZM2(-4), N(S)2(-4) NZM3(-4), N(S)3(-4) |
| Rated control voltage [Us
] >Rated control voltage [Us] |
48 V 50/60 Hz V |
| 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 | 48 - 48 V |
| Rated control supply voltage Us at AC 60HZ | 48 - 48 V |
| Rated control supply voltage Us at DC | 0 - 0 V |
| Voltage type for actuating | AC |
| Type of electric connection | Spring clamp 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 | No |
| Suitable for power circuit breaker | Yes |
| Suitable for off-load switch | Yes |
| Suitable for motor safety switch | Yes |
| Suitable for overload relay | No |
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