Description
Product Core Brief
- Model: SPCJ4D34-AA
- Brand: ABB
- Series: ABB SPAM 150 C protection relay family
- Core Function: Overcurrent and earth-fault protection relay module for feeders, transformers, and distribution equipment.
- Product Type: Protection relay module
- Key Specs: Overcurrent protection | Earth-fault protection | CT input | Trip and alarm outputs | Panel-mounted relay module
- Condition: New Original (New Surplus) / Factory Sealed
Product Introduction
When a protection relay module in an existing SPAM 150 C-type relay fails, the feeder or transformer protection scheme may lose overcurrent and earth-fault detection capability. The ABB SPCJ4D34-AA is a protection relay module associated with the ABB SPAM 150 C series, designed for medium- and low-voltage distribution networks, substations, and industrial power systems.
This module is typically sourced as a replacement for legacy protection relays, planned maintenance spares, or retrofit projects. Before ordering, confirm the existing relay nameplate, module designation, and application, since SPCJ 4D34 modules may appear in different relay assemblies and may not be automatically interchangeable across all SPAM/SPAJ/SPAA variants.
Key Technical Specifications
- Part Designation:
- Brand: ABB
- Application: Feeder, transformer, and distribution equipment protection
- Module Type: Overcurrent and earth-fault protection relay module
- Protection Functions: Overcurrent protection, earth-fault protection
- Input Signals: Current transformer secondary inputs
- Output Contacts: Trip and alarm relay outputs
- Mounting: Panel-mounted relay module
- Product Status: Discontinued / legacy product
- Condition: New Original (New Surplus) / Factory Sealed
- Note: Exact relay family, terminal layout, setting method, and compatibility should be verified against the existing nameplate and ABB documentation.
Key Selling Points & Differentiators
- Legacy relay support: Suitable for replacement in existing SPAM 150 C-related protection installations.
- Overcurrent and earth-fault coverage: Supports core feeder and transformer protection functions.
- Panel-mounted design: Fits conventional protection panel cut-outs and secondary wiring arrangements.
- Factory-sealed supply: Shipped with ESD-safe handling and visual QA before dispatch.
- Not recommended for new greenfield projects where modern ABB Relion 615/620/630 series relays are specified, or for applications requiring active OEM firmware support.
Quality Transparency SOP
- Visual inspection: Check front panel, connectors, module housing, labeling, and mounting hardware.
- ESD-safe handling: Packed in anti-static protection to prevent damage to internal electronics.
- Connector verification: Inspect CT input terminals, trip/alarm outputs, and auxiliary power terminals.
- Nameplate cross-check: Confirm SPCJ4D34-AA designation and compatible relay family before shipment.
- Functional validation: When compatible test equipment is available, verify power-up response, protection element indication, and output relay operation. Full validation depends on the host relay assembly and protection scheme.
Technical Risk Avoidance
❗ Confirm the host relay. SPCJ4D34-AA is associated with the SPAM 150 C series; do not assume it fits unrelated ABB relay families without verification.
❗ Verify CT secondary rating. Confirm whether the existing installation uses 1A or 5A CTs before replacement.
❗ Check auxiliary voltage. The relay assembly may support different auxiliary voltage ranges; confirm against the nameplate.
❗ Review protection settings. Replacement modules should be tested with secondary injection and verified against the existing coordination study.
❗ Confirm product lifecycle status. This is a legacy/discontinued module; long-term spare availability and support should be evaluated for critical installations.
Buyer’s FAQ
Is this an original ABB part?
Yes. The listing is for ABB SPCJ4D34-AA as a new original/new surplus, factory-sealed unit. We do not relabel third-party substitutes.
Which application does SPCJ4D34-AA fit?
It is used as an overcurrent and earth-fault protection relay module in medium- and low-voltage feeder and transformer protection applications, typically within the SPAM 150 C relay family.
Can SPCJ4D34-AA replace other SPCJ modules?
Not automatically. SPCJ modules may differ in protection functions, terminal layout, and compatible relay assemblies. Confirm the existing nameplate and application before substitution.
What condition is the unit?
New Original (New Surplus) / Factory Sealed, unless otherwise stated in the product listing. Photos and batch details can be confirmed before dispatch.
Do you offer a warranty?
Yes. A standard warranty applies from receipt. Exact terms depend on stock batch and installation conditions. Installation and testing should be performed by qualified protection and control engineers.
