Automotive relay · 20A SPDT 24Vdc coil · bracket mount · Littelfuse RC-200124-NN-BX
ISO Mini automotive relay with SPDT Form C contacts, 24Vdc insulated coil, 20A continuous rating, and L-style bracket mounting. Commonly used for vehicle lighting, horn, fan, heating, cooling, and starting control in standard ISO Mini relay boxes.
What this product is for
This automotive plug-in relay is used to switch 24Vdc vehicle circuits where SPDT Form C contact logic is required. It fits the ISO Mini relay form factor and includes an L-style bracket for panel or chassis mounting.
Use for
Use for commercial vehicle and mobile equipment control circuits such as lighting, horn, fan control, heating and cooling, and starting circuits. It is suited to installations that already use standard ISO Mini relay boxes or bracket-mounted relay layouts.
Avoid for
Avoid using this relay where sealed relay construction is required, where contact current exceeds 20A continuous, or where a relay with diode or resistor suppression is specifically required by the circuit design.
Best for
Best for 24Vdc automotive and heavy-duty vehicle applications needing a compact ISO Mini relay with changeover contacts and a mounting bracket. This configuration is a practical choice when replacing an existing Littelfuse or Cole Hersee style ISO Mini relay with matching form, coil voltage, and contact arrangement.
Installed in
Typically installed in trucks, buses, off-road equipment, service bodies, trailers, and other mobile electrical systems using 24Vdc control circuits. The bracket hole diameter is approximately 0.209 in (5.3 mm) based on manufacturer series data.
Why this product exists
This relay provides compact switching in a standard ISO Mini footprint so installers can add or replace control functions without redesigning the relay box. The SPDT Form C layout gives both normally open and normally closed switching options in one relay.
Compared with similar products
Compared with Form A relays, this Form C SPDT relay provides changeover contacts for more flexible control logic. Compared with versions that include diode or resistor suppression, this model uses an insulated coil with no suppression, so it is selected where the circuit does not require built-in suppression. Compared with blade-mount versions, this model adds an L-style bracket for fixed mounting.
Specifications
- Manufacturer: Littelfuse
- Manufacturer part number: RC-200124-NN-BX
- Series: ISO Mini Relays
- Product type: Automotive plug-in relay
- Contact form: SPDT, Form C, single-pole double-throw
- Continuous current rating: 20A
- Coil voltage: 24Vdc
- Maximum system voltage: 36V max
- Coil type: Insulated, no suppression
- Mounting method: L-style bracket mount
- Bracket hole diameter: approximately 0.209 in (5.3 mm)
- Form factor: ISO Mini
- Packaging: Boxed
Selection guidance: match relay form, coil voltage, suppression type, and mounting style to the original circuit design before ordering.
- SeriesISO Mini Relays
- PackagingBoxed
- Form FactorISO Mini
- Coil Voltage24Vdc
- Contact FormSPDT, Form C, single-pole double-throw
- Coil TypeInsulated, no suppression
- Mounting MethodL-style bracket mount
- Continuous Current Rating20A
- BrandsLittelfuse
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