MCCB undervoltage release
TECHNICAL DATA
MCCB Undervoltage Release for Voltage-Loss Tripping and Closing Inhibition
The MCCB undervoltage release is offered by W9 Group for voltage-dependent breaker opening and closing permission. The native listing calls it an under-voltage contact, while the functional description identifies a tripping device. Confirm the exact release code, rated control supply and operating thresholds for the compatible MCCB.
| Accessory function | Undervoltage tripping and closing inhibition |
|---|---|
| Native listing name | Under voltage contact |
| Connection options | Wiring / terminal |
| Control supply selection | Confirm exact AC or DC voltage and frequency where applicable |
| Operating thresholds | Request the trip, reset and closing-permission limits for the selected release |
| Host compatibility | Confirm breaker series, frame and accessory code |
SELECTION GUIDE
How to Select an MCCB Undervoltage Release by Supply and Trip Thresholds
Specify the host MCCB, release code, rated control supply, trip thresholds, delay and reset requirements when requesting a Undervoltage Release quotation from W9 Group.
Identify the required function
Specify voltage-loss opening and closing-inhibition requirements. Confirm whether an instantaneous or delayed release is needed.
Select one control supply
Match the release coil to the actual AC or DC supply. Confirm the nameplate rating rather than treating voltage options as a universal input.
Confirm thresholds and timing
Request the release-specific drop-out, pickup and closing-permission limits with the applicable delay.
Verify the host and wiring
Provide the complete MCCB code and request the accessory mounting diagram, terminals and reset instructions.
ABOUT W9 GROUP
W9 Group MCCB Undervoltage Release Supply and Support
Zhejiang W9 Group Technology Co., Ltd. supplies low-voltage electrical products. For a Undervoltage Release enquiry, contact W9 Group about configuration and matching product documents.
RELATED RESOURCES
MCCB Undervoltage Release Wiring, Pickup and Delay Document Requests
Use technical support and related products to specify Undervoltage Release. Request a datasheet and wiring diagram matching the selected Undervoltage Release configuration.
RELATED PRODUCTMCCB shunt releaseCompare function and configuration; request separate model ratings
DOCUMENTSW9 Group download centreRequest the current document for your quoted Undervoltage Release variant
BUYER FAQ
MCCB Undervoltage Release FAQs: Voltage Restoration and Closing Permission
Find answers about Undervoltage Release selection, configuration and ordering.
Is this an undervoltage release or a feedback contact?
The native title uses contact wording, but the functional body describes undervoltage tripping and closing inhibition. Confirm the release code and function in the quotation.
What happens when the control voltage falls?
The source describes breaker opening as the control supply falls and prevention of closing at sufficiently low supply. Confirm the selected release thresholds and time response.
What control voltage options are available?
The native listing names AC and DC choices. Confirm the exact orderable voltage, frequency where applicable and release nameplate before selecting a coil.
Is an undervoltage release interchangeable with a shunt release?
Confirm the required operating principle and compatible accessory. Voltage-dependent release and commanded shunt tripping use different control requirements.
Does voltage restoration automatically close the breaker?
Closing permission does not by itself establish automatic reclosing. Confirm the breaker mechanism, reset and complete closing-control scheme.
Can it provide a delayed trip?
No universal delay option is established here. Request the required delay characteristic and confirm the exact accessory, wiring and supply arrangement.
What is needed for a Undervoltage Release quotation?
Send the required configuration, quantity, destination market and document requirements. Ask W9 Group to confirm price, minimum order quantity, samples and lead time for the selected configuration.
PRODUCT ENQUIRY
Request an MCCB Undervoltage Release Quotation
Tell W9 Group your host MCCB, release code, rated control supply, trip thresholds, delay and reset requirements, quantity and destination market so the selected configuration can be identified.