Technical illustration. Representative component image; exact configuration and appearance may vary. Images are for reference only. The supplied part’s appearance may differ.
1SBH137001R1431 — Block Contactor Relay
contactorPart number: 1SBH137001R1431
The ABB 1SBH137001R1431 (NF31E-14) is a four-pole block contactor relay for switching auxiliary and control circuits. It has three normally open and one normally closed mechanically linked contacts, a 250–500 V AC/DC control coil, built-in surge protection and screw terminals.
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Technical specifications
| Manufacturer | ABB |
|---|---|
| Part number | 1SBH137001R1431 |
| Category | Electrical & controls |
| Product Net Width | 45 mm |
| Product Net Depth / Length | 77 mm |
| Product Net Height | 86 mm |
| Product Net Weight | 0.31 kg |
| Number of Auxiliary Contacts NO | 3 |
| Number of Auxiliary Contacts NC | 1 |
| Number of Poles | 4P |
| Rated Operational Voltage | Auxiliary Circuit 690 V |
| Rated Frequency (f) | Auxiliary Circuit 50 / 60 Hz |
| Conventional Free-air Thermal Current (I th ) | acc. to IEC 60947-5-1, Θ = 40 °C 16 A |
| Rated Operational Current AC-15 (I e ) | 6 A at 24–127 V; 4 A at 220–240 V; 3 A at 400–440 V; 2 A at 500 V or 690 V |
| Rated Operational Current DC-13 (I e ) | 6 A at 24 V; 2.8 A at 48 V; 0.55 A at 110 V; 0.27 A at 250 V; 0.13 A at 500 V |
| Rated Short-time Withstand Current Low Voltage (I cw ) | for 0.1 s 140 A |
| Rated Insulation Voltage (U i ) | acc. to IEC 60947-5-1 690 V |
| Rated Impulse Withstand Voltage (U imp ) | 6 kV |
| Maximum Electrical Switching Frequency | AC-15: 1200 cycles per hour; DC-13: 900 cycles per hour |
| Maximum Mechanical Switching Frequency | 6000 cycles per hour |
| Rated Control Circuit Voltage (U c ) | 250–500 V AC, 50/60 Hz; 250–500 V DC |
| Operate Time | Between Coil De-energization and NC Contact Closing 13 ... 98 ms |
| Mounting on DIN Rail | TH35-7.5 or TH35-15, 35 mm rail, according to IEC 60715 |
| Mounting by Screws (not supplied) | 2 x M4 Screws Placed Diagonally |
| Connecting Capacity Auxiliary Circuit | Flexible with Ferrule 1/2x 0.75 ... 2.5 mm² |
| Connecting Capacity Control Circuit | Flexible with Ferrule 1/2x 0.75 ... 2.5 mm² |
| Wire Stripping Length | Auxiliary Circuit 10 mm |
| Degree of Protection | Auxiliary and coil terminals: IP20, according to IEC 60529 and IEC 60947-1 |
| Tightening Torque | Auxiliary Circuit 1.2 N·m |
| Terminal Type | Screw Terminals |
| Product Name | Block Contactor Relay |
| Published component type | Block Contactor Relay |
| Reference status | Published part reference; specification and fitment require confirmation |
| Availability | On request |
Catalogue information may contain errors or be out of date. Full specifications and verified details are available on request. Confirm the part number and equipment fitment with us before ordering.
Product questions
What control voltage does ABB 1SBH137001R1431 require?
The NF31E-14 coil is rated for 250–500 V AC at 50/60 Hz or 250–500 V DC. This is the control supply rating, not the contact switching voltage. Verify the existing coil voltage and equipment requirements before ordering.
What contacts does the NF31E-14 relay have?
It has four mechanically linked auxiliary contacts: three normally open and one normally closed. Check the existing contact arrangement and circuit requirements before selecting a replacement.
What current can the 1SBH137001R1431 switch?
The rating depends on voltage and utilization category: AC-15 is 2 A at 500 V, while DC-13 is 6 A at 24 V or 0.27 A at 250 V. The 16 A free-air thermal current at 40 °C is not a universal switching rating.
How is the NF31E-14 mounted and connected?
The relay has screw terminals and can be mounted on a TH35-7.5 or TH35-15 DIN rail, or with two diagonal M4 screws, which are not supplied. Its net dimensions are 45 × 86 × 77 mm (width × height × depth).
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Research information may be outdated. Confirm fitment and specifications with our team before ordering.