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ST 2,5-TWIN-MT BU 3037821 PHOENIX CONTACT Knife disconnect terminal block
ST 2,5-TWIN-MT BU
3037821
PHOENIX CONTACT
50 Pcs.
Knife disconnect terminal block
Blade interruptible terminal block, nominal voltage: 400 V, nominal current: 20 A, 1st floor, connection type: Spring connection, Dimensioning cross-section: 2.5 mm², cross-section: 0.08 mm² - 4 mm², mounting: NS 35/7.5, NS 35/15, colour: blue
Automation > (Knife) disconnect terminal block
Modular TBs
Product condition, packaging, certifications and applicable manufacturer warranty terms are confirmed with the quotation.
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Phoenix Contact ST 2,5-TWIN-MT BU 3037821 knife disconnect terminal block is a specialized modular terminal designed for safely interrupting signal circuits during testing, maintenance, and commissioning procedures. Disconnect terminals allow technicians to isolate specific loops in control panels without disconnecting hardwired field connections. Pricing, availability and lead time are confirmed per enquiry through an RFQ.
- Connectable conductor cross section solid-core (EF007337): 0.08 mm²
- Rated current In (EF008250): 20 A
- Rated voltage (EF000228): 400 V
- Type of electrical connection 1 (EF002526): Spring clamp connection
- Type of electrical connection 2 (EF002527): Spring clamp connection
- Number of clamp positions per level (EF002660): 3
- Internally connected stages (EF002661): Yes
- Mounting method (EF000003): DIN rail (top hat rail) 35 mm
- Width (EF000008): 5.2 mm
- Height (EF000040): 72 mm
- Depth (EF000049): 36.5 mm
- Closing plate required (EF002525): Yes
- Colour (EF000007): Blue
- With integrated test socket (EF002547): No
More info
▲Key Commercial Data
| Orderkey | 3037821 |
|---|---|
| Packing unit | 50 pc |
| Catalog page | Page 163 (C-1-2017) |
| GTIN | 4017918908577 |
| Weight per Piece (excluding packing) | 8.900 g |
| Custom tariff number | 85369010 |
| Country of origin | DE (Germany) |
General
| Number of levels | 1 |
|---|---|
| Number of connections | 3 |
| Nominal cross section | 2.5 mm² |
| Color | blue |
| Insulating material | PA |
| Flammability rating according to UL 94 | V0 |
| Area of application | Railway industry |
| Machine building | |
| Plant engineering | |
| Rated surge voltage | 6 kV |
| Degree of pollution | 3 |
| Overvoltage category | III |
| Insulating material group | I |
| Connection in acc. with standard | IEC 60947-7-1 |
| Nominal current IN | 20 A (with 4 mm² conductor cross section) |
| Maximum load current | 20 A (with 4 mm² conductor cross section) |
| Nominal voltage UN | 400 V |
| Open side panel | Yes |
| Relative insulation material temperature index (Elec., UL 746 B) | 130 °C |
| Temperature index of insulation material (DIN EN 60216-1 (VDE 0304-21)) | 125 °C |
| Static insulating material application in cold | -60 °C |
| Behavior in fire for rail vehicles (DIN 5510-2) | Test passed |
| Flame test method (DIN EN 60695-11-10) | V0 |
| Oxygen index (DIN EN ISO 4589-2) | >32 % |
| NF F16-101, NF F10-102 Class I | 2 |
| NF F16-101, NF F10-102 Class F | 2 |
| Surface flammability NFPA 130 (ASTM E 162) | passed |
| Specific optical density of smoke NFPA 130 (ASTM E 662) | passed |
| Smoke gas toxicity NFPA 130 (SMP 800C) | passed |
| Calorimetric heat release NFPA 130 (ASTM E 1354) | 27,5 MJ/kg |
| Fire protection for rail vehicles (DIN EN 45545-2) R22 | HL 1 - HL 3 |
| Fire protection for rail vehicles (DIN EN 45545-2) R23 | HL 1 - HL 3 |
| Fire protection for rail vehicles (DIN EN 45545-2) R24 | HL 1 - HL 3 |
| Fire protection for rail vehicles (DIN EN 45545-2) R26 | HL 1 - HL 3 |
Connection data
| Conductor cross section solid min. | 0.08 mm² |
|---|---|
| Conductor cross section solid max. | 4 mm² |
| Conductor cross section flexible min. | 0.08 mm² |
| Conductor cross section flexible max. | 2.5 mm² |
| Conductor cross section AWG min. | 28 |
| Conductor cross section AWG max. | 12 |
| Conductor cross section flexible, with ferrule without plastic sleeve min. | 0.14 mm² |
| Conductor cross section flexible, with ferrule without plastic sleeve max. | 2.5 mm² |
| Conductor cross section flexible, with ferrule with plastic sleeve min. | 0.14 mm² |
| Conductor cross section flexible, with ferrule with plastic sleeve max. | 2.5 mm² |
| 2 conductors with same cross section, stranded, TWIN ferrules with plastic sleeve, max. | 0.5 mm² |
| Connection method | Spring-cage connection |
| Stripping length | 8 mm ... 10 mm |
| Internal cylindrical gage | A3 |
Standards and Regulations
| Connection in acc. with standard | CSA |
|---|---|
| IEC 60947-7-1 | |
| Flammability rating according to UL 94 | V0 |
| Fire protection for rail vehicles (DIN EN 45545-2) R22 | HL 1 - HL 3 |
| Fire protection for rail vehicles (DIN EN 45545-2) R23 | HL 1 - HL 3 |
| Fire protection for rail vehicles (DIN EN 45545-2) R24 | HL 1 - HL 3 |
| Fire protection for rail vehicles (DIN EN 45545-2) R26 | HL 1 - HL 3 |
Environmental Product Compliance
| China RoHS | Environmentally friendly use period: unlimited = EFUP-e |
|---|---|
| No hazardous substances above threshold values |