ABB SPAG 333 C Generator Protection Relay

ABB SPAG 333 C Generator Protection Relay Supplier and Exporter in India

ABB SPAG 333 C Replacement and Legacy Spare Availability

Replacement: ABB SPAG 333 C is discontinued. For an existing installation, the replacement should be checked against the complete ABB order code and relay nameplate to match the correct legacy unit.

ARP IMPEX supplies and exports ABB SPAG 333 C generator protection relays for replacement, maintenance and existing generator protection panels.

SPAG 333 C belongs to ABB’s older SPACOM generator protection range. It was mainly used for small and medium-sized generators in hydro power plants, thermal power stations, industrial generating plants, marine systems and offshore installations.

The relay combines overcurrent, short-circuit, reverse power, overvoltage and earth-fault protection. One of the main features of SPAG 333 C is its restricted earth-fault protection, making it particularly suitable for generators that are solidly earthed or earthed through a low-resistance resistor.

Since SPAG 333 C is no longer an active ABB product, most enquiries today are for replacement of a failed relay, maintenance stock, plant shutdown spares or matching units for older generator protection panels.

If you need an ABB SPAG 333 C replacement relay, send the complete ABB order number or a clear photograph of the existing relay nameplate. We can check the correct legacy version against your quantity and destination country.

Technical Specifications

• Brand: ABB
• Series: SPACOM / SPAG
• Model: SPAG 333 C
• Product type: Generator protection relay
• Product status: Legacy / discontinued
• Main application: Small and medium generator protection
• Current input: 1 A or 5 A
• Voltage input: 100 V or 110 V
• Rated frequency: 50 Hz or 60 Hz, depending on order
• Overcurrent protection: Available
• Short-circuit protection: Available
• Reverse power protection: Available
• Overvoltage protection: Available
• Restricted earth-fault protection: Available
• Residual-current earth-fault protection: Available
• Communication: SPA serial communication
• Auxiliary supply: 80–265 V AC/DC or 18–80 V DC, depending on version
• Self-supervision: Built-in
• Enclosure: IP54

For an exact replacement, the complete ABB order code should be checked because frequency and auxiliary supply can vary between versions.

Features

• Three-phase overcurrent protection
• Short-circuit protection
• Reverse power protection
• Overvoltage protection
• Restricted earth-fault protection
• Residual-current earth-fault protection
• Protection against generator motoring
• Local fault and operating indication
• SPA serial communication
• Connection to higher-level monitoring systems
• Internal relay self-supervision
• Suitable for land-based, marine and offshore generator installations

For a replacement enquiry, detailed relay settings are normally not required at the first stage. The ABB order code and existing nameplate are more useful for checking the correct unit.

Applications

SPAG 333 C is commonly used for:

• Small generator protection
• Medium-sized generator protection
• Generator restricted earth-fault protection
• Generator stator earth-fault protection
• Generator reverse power protection
• Solidly earthed generators
• Low-resistance-earthed generators
• Small hydro power plants
• Thermal power stations
• Captive power plants
• Industrial generating stations
• Generator protection panels
• Marine generator systems
• Offshore installations
• Existing ABB SPACOM panels
• Plant shutdown spare requirements

ABB particularly identifies the relay for small and medium generators, including solidly earthed and low-resistance-earthed generator applications.

ABB SPAG 333 Models

The SPAG 333 range was supplied in two main versions:

ABB SPAG 333 B

SPAG 333 B is the version without serial communication capability.

ABB SPAG 333 C

SPAG 333 C includes a serial communication interface for connection to ABB’s SPA bus and higher-level monitoring or control systems.

The protection functions are closely related, but the communication arrangement is different. For an existing panel replacement, the exact B or C version should therefore be confirmed from the nameplate.

ABB SPAG 333 C Replacement

ABB lists SPAG 333 C as not active since 2007. For generators where the relay remains in service, buyers may need:

• Replacement for a failed SPAG 333 C
• Matching legacy spare
• Spare for an existing generator panel
• Plant shutdown stock
• Maintenance inventory
• Marine generator spare
• Offshore installation spare

For an exact replacement, please send:

• Complete ABB order code
• Clear relay nameplate photograph
• Required quantity
• Destination country
• Required delivery schedule

ABB’s current SPACOM-to-REX615 retrofit program lists selected legacy relay types, but SPAG 333 C is not currently included. We therefore do not describe REX615 or another ABB relay as a direct retrofit replacement for SPAG 333 C.

For an existing generator panel, the correct starting point is the original SPAG 333 C part number and nameplate.

Why Buy ABB SPAG 333 C from ARP IMPEX?

ARP IMPEX supports international buyers looking for ABB legacy relays for existing plants and maintenance needs.

We can assist with:

• ABB SPAG 333 C part-code checking
• Existing relay nameplate matching
• Legacy spare availability
• Replacement for failed relays
• Single-unit and multiple-quantity quotations
• Plant maintenance and shutdown spares
• Marine and offshore spare requirements
• ABB technical datasheets
• Export packing
• International shipping support

We handle RFQs from power plants, EPC contractors, industrial companies, marine operators, maintenance companies and electrical traders.

Request a Quote for ABB SPAG 333 C

For price and availability, please send:

• Complete ABB SPAG 333 C order number
• Clear relay nameplate photograph
• Required quantity
• Destination country
• Required delivery date

If the complete part number is not available, send the nameplate photograph, and we can start checking from there.

Send your ABB SPAG 333 C part code, quantity and destination country to ARP IMPEX for price, availability and export quotation.

ARP IMPEX supplies ABB SPAG 333 C replacement relays and legacy ABB SPACOM generator protection spares for international buyers.