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nm8-shaft500-1250 chint 500mm shaft for nm8-mr-1250
Chint NM8-SHAFT500-1250 500 mm extension shaft for the NM8-MR-1250 rotary handle, designed for external operation of compatible NM8 and NM8S 800A and 1250A frame moulded case circuit breakers.
Why Choose the Chint NM8-SHAFT500-1250 Extension Shaft?
The Chint NM8-SHAFT500-1250 is a heavy-duty 500 mm extension shaft designed for use with the Chint NM8-MR-1250 extended rotary handle on compatible Chint NM8 and NM8S 800A and 1250A frame moulded case circuit breakers (MCCBs). It provides a secure mechanical connection between the door-mounted rotary handle and the breaker operating mechanism, allowing safe and convenient external operation of the MCCB.
Designed for industrial switchboards, power distribution panels and OEM equipment, the NM8-SHAFT500-1250 enables the circuit breaker to be mounted deep inside an enclosure while remaining fully accessible from the outside. This improves operator safety by eliminating the need to open the enclosure during normal switching operations.
Featuring a 500 mm shaft length, this accessory is ideal for larger electrical cabinets where a longer operating linkage is required. Its robust construction ensures dependable performance in demanding industrial and commercial environments.
Key Advantages
- Designed for the Chint NM8-MR-1250 rotary handle.
- 500 mm extension shaft for deeper electrical enclosures.
- Provides safe external operation of compatible MCCBs.
- Allows breaker operation without opening the enclosure door.
- Reliable mechanical connection for smooth operation.
- Suitable for industrial switchboards, OEM equipment and commercial installations.
Key Features
- Chint NM8 MCCB accessory.
- 500 mm shaft length.
- Designed for the NM8-MR-1250 extended rotary handle.
- Compatible with NM8 and NM8S 800A and 1250A frame MCCBs.
- Provides dependable mechanical linkage.
- Suitable for door-mounted rotary handle assemblies.
- Heavy-duty construction for industrial environments.
- Simple installation with compatible rotary handle kits.
Reliable External MCCB Operation
Extension shafts form an essential part of a rotary handle operating system by connecting the external operating handle to the moulded case circuit breaker mounted inside an enclosure. This arrangement allows operators to safely switch the breaker from outside the panel, improving accessibility while reducing exposure to live electrical equipment.
The Chint NM8-SHAFT500-1250 has been engineered specifically for use with the NM8-MR-1250 rotary handle, delivering dependable operation in industrial control panels, power distribution systems and OEM machinery.
Typical Applications
- Industrial switchboards.
- Power distribution panels.
- Machine control cabinets.
- Motor control centres.
- OEM electrical equipment.
- Commercial electrical installations.
Technical Specifications
| Manufacturer | Chint |
|---|---|
| Series | NM8 MCCB Accessories |
| Model | NM8-SHAFT500-1250 |
| Product type | Extension shaft |
| Compatible rotary handle | NM8-MR-1250 |
| Compatible breaker series | NM8 / NM8S |
| Compatible frame sizes | 800A / 1250A |
| Shaft length | 500 mm |
| Function | Connects door-mounted rotary handle to MCCB |
| Application | External MCCB operation |
| Mounting | Rotary handle mechanism |
| Suitable for | Industrial and commercial electrical installations |
Frequently Asked Questions
What is the Chint NM8-SHAFT500-1250 used for?
It connects the NM8-MR-1250 rotary handle to a compatible NM8 or NM8S moulded case circuit breaker, allowing the breaker to be operated from outside the enclosure.
What is the shaft length?
The NM8-SHAFT500-1250 has a 500 mm shaft length, making it suitable for deeper electrical enclosures.
Which rotary handle is it compatible with?
It is designed specifically for use with the Chint NM8-MR-1250 extended rotary handle.
Which MCCBs can this extension shaft be used with?
It is intended for compatible Chint NM8 and NM8S 800A and 1250A frame moulded case circuit breakers.
Where is this accessory typically installed?
It is commonly installed in industrial switchboards, control panels, OEM machinery and commercial electrical distribution systems.
Trusted by Electrical Professionals Worldwide
Chint NM8 accessories are trusted by panel builders, electrical contractors and industrial engineers for dependable operation, straightforward installation and reliable performance in low-voltage power distribution systems.
