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Dis-connector circuit breaker
HTH2-125 Disconnector circuit breaker
For panel builders and installers, it replaces a standard MCB when a disconnect function is needed without adding a...
Product Overview
What This Model Does
For panel builders and installers, it replaces a standard MCB when a disconnect function is needed without adding a separate isolator switch.
Key Benefits
- Provides a visible mechanical disconnection point for safe maintenance and servicing
- Combines overcurrent protection with isolation in a single DIN rail-mounted device
Who It Is For
- Panel builders specifying integrated protection and isolation in distribution boards
- Electrical wholesalers stocking a disconnector version of their MCB range
- Switchgear assemblers integrating a single device for both protection and isolation
- Solar EPC contractors needing a compliant disconnector for inverter or battery connections
- OEM/ODM buyers sourcing a standard disconnector breaker for integration into larger systems
Problems It Solves
- A separate isolator switch must be added to a panel to meet safety or code requirements
- An installer must manually open a breaker and verify disconnection, increasing risk
- Multiple devices are used to achieve protection and isolation, increasing panel space and cost
- Lack of a visible disconnection point makes maintenance unsafe or non-compliant
- A breaker with only protection function cannot be used where isolation is required by regulation
Application Scenarios
- Electrical panels where a visible disconnection point is required for safety during maintenance
- Industrial control panels with multiple circuits needing isolation for servicing
- Distribution boards in commercial buildings where a disconnect switch is mandated by local codes
- Solar inverters and battery systems where isolation is needed between the grid and DC side
- Panel builders integrating a single device that serves both protection and isolation
Technical Features
How It Is Built
- Type C instantaneous trip characteristic
- Visible disconnection point when open, with no live parts exposed
Materials and Construction
- Silver-alloy contacts with a thermal-magnetic trip mechanism
- Metal toggle handle with mechanical linkage to the contact system
- Insulating base and internal carriers made from high-durability thermoplastic
Quality Control
- Insulation and dielectric withstand test performed before packing
- Visual inspection of disconnection point and housing integrity
Specifications
Stated Ratings for This Model
| Rack Rated Current | 125A |
|---|---|
| Instantaneous Trip Type | C |
| Pollution Level | 2 |
| Disconnection Visibility | Visible when open |
Ratings are as published for this model. Where a value is not published we mark it TBC rather than estimating it.
Values that could not be confirmed against the published catalogue text for this model are marked TBC and confirmed by email before order: Standards Compliant, Rated Voltage, Frequency, Rated Current, Rated Short-circuit Breaking Capacity, Rated Impulse Withstand Voltage, Protection Level, Specified Use Temperature, Mechanical Life, Electrical Life, Mounting Type.
Manufacturing Process
- Moulding and machining of the breaker housing and internal carriers
- Assembly of the thermal-magnetic trip unit and contact system
- Installation of the toggle handle and mechanical linkage
- Calibration of the trip characteristic against the Type C curve
- Routine dielectric and operation testing before packing
Customization Options
- ODM branding on housing print and packaging
- Packaging and carton marking to the buyer's own specification
Comparison
How It Compares
| Conventional MCB | Adds a visible disconnection point but lacks remote control or smart features |
|---|---|
| MCB plus separate isolator switch | One device instead of two, reducing panel space and wiring complexity |
| Isolator switch only | Provides overcurrent protection, so no separate MCB is needed |
Use Guide
- Ensure the device is fully engaged on the rail and the toggle handle moves freely
- Close the breaker manually and verify it holds under load before use
- Use the visible disconnection point to confirm circuit isolation during maintenance
- Do not operate the breaker under load unless the handle is fully closed
- Keep the device accessible and clearly labelled for safe operation
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View ProductFAQ
Questions About the HTH2-125 Disconnector circuit breaker
Can we have it supplied under our own brand
Yes. We run ODM projects and can print your branding on the housing and packaging. Send us your artwork and the current ratings you need.
What are the minimum order quantity and lead time
Both depend on the current ratings and branding you need. Email [email protected] with your model list and quantities for a current answer.
How do we get a price for this model
Email [email protected] with the rated current, pole count and quantity you need and we will quote this model directly.
Can this be supplied under our own brand
Yes. We run ODM projects and can print your branding on the housing and packaging.
Which documents can you supply for this model
Datasheets, specification sheets and any certification files held for the model are sent by email on request.
Do you supply samples before a production order
Yes. Sample orders are normal, especially for smart devices that should be paired in the target app before scaling.
Get a Quotation for the HTH2-125 Disconnector circuit breaker
Tell us the ratings, pole counts and quantities you need and we will price this model directly.