Niglon MS4CBR-125TSM 125A 4 Pole Enclosed CBR
The Niglon MS4CBR-125TSM 125A 4 Pole Enclosed CBR combines a 125A 4 pole MCCB with residual current protection inside a robust mild steel enclosure. Designed for commercial and industrial electrical installations, the unit provides adjustable thermal protection, fixed magnetic protection and selectable residual current settings in one enclosed switchgear assembly.
Rated for operation at 400/415V and 50/60Hz, the MS4CBR-125TSM has a rated breaking capacity of 35kA at 415V and a rated ultimate short-circuit breaking capacity of 50kA at 400V. The residual current threshold can be set to 100mA, 300mA or 500mA, with selectable time delays of 50ms, 500ms or 800ms. :contentReference[oaicite:0]{index=0}
Key Features
- 125A rated current
- 4 pole enclosed CBR
- MCCB combined with residual current protection
- 400/415V rated operational voltage
- 50/60Hz rated frequency
- 35kA breaking capacity at 415V
- 50kA ultimate short-circuit breaking capacity at 400V
- Adjustable residual current threshold: 100mA, 300mA or 500mA
- Adjustable time delay: 50ms, 500ms or 800ms
- Adjustable thermal release from 0.8 to 1.0 x In
- Fixed magnetic protection
- Defeatable and padlockable operating handle
- 1.2mm mild steel enclosure
- RAL7035 epoxy powder-coated finish
- IP30 when correctly fitted
Adjustable Circuit and Residual Current Protection
The Niglon MS4CBR-125TSM 125A 4 Pole Enclosed CBR allows the protection settings to be configured for the requirements of the installation. The MCCB includes adjustable thermal protection with a setting range of 0.8 to 1.0 x In together with fixed magnetic protection. Residual current protection can be selected at 100mA, 300mA or 500mA, while the time delay can be set to 50ms, 500ms or 800ms. :contentReference[oaicite:1]{index=1}
Heavy-Duty Mild Steel Enclosure
The unit is housed inside a 1.2mm mild steel enclosure finished in RAL7035 epoxy powder coat. Overall dimensions are 500mm high x 400mm wide x 200mm deep, with an IP30 degree of ingress protection when fitted correctly. The enclosed design also incorporates a defeatable, padlockable handle for secure operation and isolation. :contentReference[oaicite:2]{index=2} :contentReference[oaicite:3]{index=3}
Technical Specification
| Brand | Niglon |
| Product Code | MS4CBR-125TSM |
| Product Type | Enclosed CBR – MCCB + Residual Current Protection |
| Number of Poles | 4 Pole |
| Rated Current | 125A |
| Rated Operational Voltage | 400/415V |
| Rated Insulation Voltage | 750V |
| Rated Frequency | 50/60Hz |
| Breaking Capacity at 415V | 35kA |
| Ultimate Short-Circuit Breaking Capacity | 50kA at AC 400V / 50Hz |
| Impulse Withstand Voltage | 8000V |
| Residual Current Threshold | 100 / 300 / 500mA Adjustable |
| Time Delay | 50 / 500 / 800ms Adjustable |
| Thermal Release | 0.8 to 1.0 x In Adjustable |
| Mechanical Endurance | 7000 Operations |
| Electrical Endurance | 1000 Operations |
| Enclosure Material | 1.2mm Mild Steel |
| Dimensions | 500 x 400 x 200mm (H x W x D) |
| IP Rating | IP30 When Fitted |
| Finish | Epoxy Powder Coat |
| Colour | RAL7035 |
| Weight | 13kg |
Compatible Accessories
- FFA-AX160 – Auxiliary Contact
- FFA-AL160 – Alarm Contact
- FFA-ST160 – 230V Shunt Trip
- FFA-UT160 – 230V Undervoltage Trip
- 4P125EBK – Straight Extension Kit
- 4P125SEBK – Spread Extension Kit
- 4P125EBK-TC – Terminal Covers
The Niglon MS4CBR-125TSM 125A 4 Pole Enclosed CBR provides a complete enclosed protection solution where high-current circuit protection and adjustable residual current protection are required within a durable steel enclosure.
