Description
2. At-A-Glance Executive Brief
- Brand: ABB
- Model: 1TGB302004R5003
- Part Type: Low Voltage Circuit Breaker
- Lifecycle status: Obsolete OEM production, available via surplus and refurbished stock
- System compatibility: Industrial motor control and DCS auxiliary power circuits
- Approximate unit weight: 0.45kg
3. Technical Introduction (Structure C)
ABB 1TGB302004R5003 serves as branch circuit overcurrent and short-circuit protection for control panel auxiliary loads. It fits standard panel mounting arrangements and matches original trip characteristics required for legacy automation cabinets. The unit stabilizes power delivery to I/O racks, sensors and auxiliary control hardware by isolating fault currents before damage propagates to sensitive PLC hardware.
4. Core Technical Specifications
- Model: 1TGB302004R5003
- Manufacturer: ABB
- Device Type: Low Voltage Moulded Case Circuit Breaker
- Application: Industrial control panel circuit protection
- Mounting: Standard DIN rail panel installation
Please refer to the OEM datasheet for complete environmental tolerances.

ABB 1TGB302004R5003
5. Field Engineer’s Tech Notes
- Trip curve calibration cannot be modified on this fixed-spec unit. Confirm load current requirements before installation; mismatched trip profiles lead to nuisance tripping under normal operating conditions.
- Check terminal screw torque during commissioning. Loose terminals generate thermal buildup that accelerates contact degradation, especially in continuous 24/7 plant operation environments.
6. Adaptive QA & Testing Protocol

ABB 1TGB302004R5003
7. Buyer’s FAQ
A: Physical footprint and terminal layout match the original factory fit. Verify trip ratings against existing equipment before swap-out.
Q: What conditions are available for the ABB 1TGB302004R5003?
A: We supply new surplus NSFP and fully tested refurbished units. Stock condition is clearly noted on each quotation.
Q: How long is the warranty provided on spare part orders?
A: Standard warranty terms differ between new surplus and refurbished inventory, full details will be listed on your proforma invoice.
Q: What lead times apply for out-of-stock requests of this obsolete breaker?
A: Lead time depends on global surplus sourcing; confirmed availability and timeline will be advised within one working day of inquiry.



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