R. STAHL 8146/5-V27 Motor Protection Circuit Breaker
Article No. 249199
Product Overview
The R. STAHL 8146/5-V27 motor protection circuit breakers are designed for the protection of Ex e and Ex d motors, as well as associated conductors and systems. The devices feature a robust glass-fiber reinforced polyester resin housing. Standard versions include an adjustable thermal overload release and a phase-sensitive release, or an instantaneous electromagnetic release, which must be specified at the time of order. Retrofitting is not possible.
Key features include:
- Protection for conductors and systems for Ex e and Ex d motors
- Robust housing made of glass-fiber reinforced polyester resin
- Optional: undervoltage release, overcurrent release, ammeter, auxiliary contact
Technical Characteristics
Explosion Protection
| Characteristic | Specification |
|---|---|
| Field of application | European Union (ATEX), IECEx |
| Application zones | 1, 2, 21, 22 |
| IECEx gas certificate | IECEX PTB 06.0090 |
| IECEx gas explosion protection | Ex db eb IIC T5 Gb |
| IECEx dust certificate | IECEX PTB 06.0090 |
| IECEx dust explosion protection | Ex tb IIIC T95 °C Db |
| ATEX gas certificate | PTB 01 ATEX 1024 |
| ATEX gas explosion protection | II 2 G Ex db eb IIC T5 Gb |
| ATEX dust certificate | PTB 01 ATEX 1024 |
| ATEX dust explosion protection | II 2 D Ex tb IIIC T95 °C Db |
| Certificates | ATEX (PTB), Canada (FM), China (NEPSI), IECEx (PTB), India (Peso) |
| Certificate of conformity | ATEX (EUK), China (CCC) |
Electrical Characteristics
| Characteristic | Specification |
|---|---|
| Switching capacity | 12.4 kW |
| AC tripping voltage | 400 V |
| Current adjustment range | 0.25 – 0.4 A |
| Ammeter present | No |
| Auxiliary contacts | 1 NF, 1 NO |
| Release | Undervoltage release |
| Number of poles | 3 |
| Frequency range | 50–60 Hz |
Mechanical Characteristics
| Characteristic | Specification |
|---|---|
| Ambient temperature | -20°C ... +40°C (-4 °F ... +104 °F) |
| Degree of protection (IP) | IP66 |
| Degree of protection notice | according to EN/IEC 60529 |
| Housing material | Polyester resin, reinforced with glass fibers |
| Min. solid conductor connection size AWG | AWG 16 |
| Max. solid conductor connection size AWG | AWG 8 |
| Min. fine-stranded conductor connection size AWG | AWG 16 |
| Type of screw terminal | 8161 |
| Width | 170 mm (6.69 in) |
| Height | 227 mm (8.94 in) |
| Depth | 131 mm (5.16 in) |
| Handle color | Black |
| Protection cap color | Black |
| Rotary knob inscription | 0-1 |
| Seal | Foamed silicone |
| Lockable | Triple lock at 0 |
| Weight | 2.63 kg (5.8 lb) |
Components
| Component | Specification |
|---|---|
| Cable glands | 3 x M25 Ø 7–17 mm |
Diagram showing the dimensions of the circuit breaker: Width 170 [6.69], Height 227 [8.94], Depth 131 [5.16]. Includes details on cable entries and current adjustment ranges.
Cable Entries
| Current adjustment range up to 16 A | Cable glands series 8161 | Blanking plugs series 8290 | |
|---|---|---|---|
| M25 x 1.5 | M32 x 1.5 | ||
| without | A, B | -- | C |
| with | A, B, C | M25 x 1.5 | C |
Current adjustment ranges: 16...20 A, 20-22.5 A.
