R. STAHL 8146/5-V27 Motor Protection Circuit Breaker
Article No. 249248
Product Description
The R. STAHL 8146/5-V27 motor circuit breakers protect Ex e and Ex d motors, as well as associated conductors and systems. Standard versions are equipped with an adjustable and phase-sensitive thermal overcurrent release, or an instantaneous electromagnetic release, which must be specified when ordering. Retrofitting is not possible.
Key Features:
- 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.
Visual Representation:
[Image of the R. STAHL 8146N motor circuit breaker, showing its compact design and robust housing.]
Technical Specifications
Explosion Protection
| Application Area | 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
| Trigger Voltage AC | 9-12.5 A |
|---|---|
| Current Adjustment Range | Not specified |
| Ammeter Present | 1 NO |
| Auxiliary Contacts | 1 NF |
| Release | None |
| Number of Poles | 3 |
| Frequency Range | 50-60 Hz |
Ambient Conditions
| Ambient Temperature | -20°C ... +40°C (-4 °F ... +104 °F) |
|---|
Mechanical Characteristics
| Degree of Protection (IP) | IP66 |
|---|---|
| Degree of Protection Notice | According to EN/IECI 60529 |
| Housing Material | Polyester resin, reinforced with glass fibers |
| Conductor Connection (solid wire) Min. AWG | AWG 16 |
| Conductor Connection (solid wire) Max. AWG | AWG 8 |
| Conductor Connection (fine-stranded wire) Min. AWG | AWG 16 |
| Screw Terminal Type | 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 Handle Inscription | 0-1 |
| Seal | Foamed silicone |
| Lockable | In the 0 position |
| Weight | 3.2 kg (7.05 lb) |
Components
| Cable Glands | 3 x M25 Ø 7-17 mm |
|---|
Dimensional Drawing
[Diagram showing the overall dimensions of the circuit breaker in mm and inches. Key dimensions include width, height, depth, and specific internal clearances.]
Cable Entries:
| Version | Auxiliary Contacts | Cable Glands Series 8161 | Blanking Plugs Series 8290 |
|---|---|---|---|
| Without current adjustment range up to 16 A | A, B | M25 x 1.5 | C |
| With current adjustment range up to 16 A | A, B, C | M25 x 1.5 | C |
Current Adjustment Range:
| Current Adjustment Range | |||
|---|---|---|---|
| Without | A, B | -- | C |
| With, 16 ... 20 A, 20 ... 22.5 A | A, B | C | -- |
