Skip to content
CHINT ELECRTIC
CHINT NXB MCB Accessories AX/AL/SHT/UVT/OVT/OUVT-X1/X3
Regular price
$17.60 USD
Regular price
$19.40 USD
Sale price
$17.60 USD
Unit price
per
Shipping calculated at checkout.
Couldn't load pickup availability
CHINT NXB MCB Accessories AX/AL/SHT/UVT/OVT/OUVT-X1/X3 Auxiliary, Alarm, Shunt, Over/Under Voltage Trip Unit for NXB-40/63/125 Mini Circuit Breaker
Product Description
Overview
Original CHINT modular snap-on auxiliary accessories exclusively designed for NXB Kunlun series miniature circuit breakers.
- X1: Side mount for NXB-40 / NXB-63 (1P~2P standard frame breaker)
-
X3: Side mount for NXB-125 / NXB-125G (3P~4P large current frame breaker)
6 full types to realize status feedback, fault alarm, remote tripping, overvoltage/undervoltage automatic protection for distribution cabinet breakers.
Full Option English List
1. AX-X1 / AX-X3 | Standard Auxiliary Contact
AX-X1 → AX-X1 Auxiliary Contact (for NXB-40/NXB-63)
AX-X3 → AX-X3 Auxiliary Contact (for NXB-125/NXB-125G, Selected Item)
Function: Synchronous ON/OFF signal output following main breaker’s switch action for PLC & status indicator.
2. AL-X1 / AL-X3 | Fault Alarm Auxiliary Contact
AL-X1 → AL-X1 Fault Alarm Contact (NXB40/NXB63)
AL-X3 → AL-X3 Fault Alarm Contact (NXB125/NXB125G)
Function: Only outputs trigger signal when breaker trips from overload/short-circuit fault.
3. OVT-X1 / OVT-X3 | Over Voltage Trip Release
OVT-X1 → OVT-X1 Overvoltage Tripping Device(X1 frame)
OVT-X3 → OVT-X3 Overvoltage Tripping Device(X3 frame)
Auto-cut off breaker when supply voltage exceeds overvoltage threshold.
4. UVT-X1 / UVT-X3 | Under Voltage Trip Release
UVT-X1 → UVT-X1 Undervoltage Trip Unit(X1)
UVT-X3 → UVT-X3 Undervoltage Trip Unit(X3)
Automatically trip breaker when input voltage drops below undervoltage setting.
5. OUVT-X1 / OUVT-X3 | Combined Over+Under Voltage Trip
OUVT-X1 → OUVT-X1 Over & Undervoltage Dual Protection Trip(X1)
OUVT-X3 → OUVT-X3 Over & Undervoltage Dual Protection Trip(X3)
Realize both overvoltage & undervoltage automatic breaking protection in one unit.
6. SHT-X1 / SHT-X3 | Shunt Trip Release (Remote Cut-off Coil)
SHT-X1 AC230V/400V Eco → SHT-X1 Shunt Trip AC230/400V for NXB40/NXB63
SHT-X1 AC/DC24V/48V Eco → SHT-X1 Shunt Trip AC/DC24/48V for X1 frame
SHT-X3 AC230V/400V Eco → SHT-X3 Shunt Trip AC230/400V for NXB125/NXB125G
SHT-X3 AC/DC24V/48V Eco → SHT-X3 Shunt Trip AC/DC24/48V for X3 frame
Remote energize to trip breaker for remote power cut control.
Core Technical Parameters
| Item | Specification |
|---|---|
| Fit Breaker | X1:NXB-40/NXB-63; X3:NXB-125/NXB-125G |
| Contact Rating | AC250V 3A |
| SHT Available Voltage | AC230V/400V / AC/DC24V/48V |
| Installation | Side snap-on mounting, no modification on original MCB |
| Shell Material | UL94-V0 flame retardant environmental plastic |
| Standard | GB/T14048.5 |
Product Advantages
- Plug-and-play Side Assembly: Directly snap onto the right side of corresponding NXB breaker, convenient for cabinet on-site renovation and later upgrade.
- Complete Function Portfolio: Cover status monitoring, fault alarming, remote breaking, over/under voltage full protection demands.
- Strict Size Classification: X1 for 63A small frame, X3 for 125A large frame, fully match all mainstream NXB pole configurations.
- Stable Mechanical Linkage: Precise mechanical linkage with main switch, accurate signal & tripping action.
Application Scenarios
Household distribution box, industrial control cabinet, photovoltaic combiner box, building fire monitoring system, generator power distribution panel.
Care Instructions
Care Instructions
