Product Description & Specifications
Confirm the complete catalog number and application requirements before ordering. The specifications below reflect the product information available for this listing.
- Manufacturer
- Siemens
- Sub-Category
- Auxiliary
- Series
- Sentron Series
- Frame
- 3VA
- Standards
- UL Listed
- Temp Rating
- -13°F to 158°F (-25°C to 70°C)
- Compatible Frames
- 3VA
- Weight
- 5
- Certification
- UL Listed
Product description & additional details
3VA9978-0AA22
3VA9978-0AA22 is a leading auxiliary switch accessory designed for Siemens 3VA molded case circuit breakers, featuring a changeover contact configuration rated for 3 A at 300 V AC. This compact auxiliary switch is engineered for industrial and commercial power distribution applications, providing reliable switching control in conjunction with 3VA circuit breaker frames. The unit measures 1 slot (7 mm) in width and is designed for screw-type terminal connections with a stripped conductor length of 15 mm per IEC standards.
- Rated Current: 3 A
- Operating Voltage AC: 300 V
- Operating Voltage DC: 250 V
- Contact Type: Changeover (CO)
- Mechanical Design: 1 slot, 7 mm width
- Surge Voltage Resistance: 4 kV
- Degree of Pollution: 3
- Overvoltage Category: III
- Lead Time: 20 ms
- Tightening Torque: 0.4 to 0.5 N·m
- Conductor Cross Section: AWG 20 to 16
- Compact Size: 3.94 in L x 0.31 in W x 6.89 in H
Specifications
- Part Number: 3VA9978-0AA22
- Manufacturer : Siemens
- Brand : Siemens
- Category : Circuit Breaker
- Item Subcategory : Auxiliary
- Family : Sentron Series
- Type : 3VA
- Temp Rating : -13°F to 158°F (-25°C to 70°C)
- Compatible Frames : 3VA
Product Data
- Weight : 5
- Standards : UL Listed
- Certification : UL Listed
Return eligibility: what to know before ordering
Return requests must be made within 30 days of shipping and require authorization. Used, installed, energized, or tested items are not eligible. A restocking fee of up to 35% may apply. Review the full policy before purchase.
Product-specific restrictions apply. International orders are non-cancellable and non-refundable under the policy.
Warranty supplied by Essential Electric
Warranty coverage is provided by Essential Electric, subject to the product and policy terms. Essential Electric is an independent supplier. Surplus or discontinued inventory may not qualify for the original manufacturer’s warranty.
Hear from other buyers.
What customers say about ordering from Essential Electric.
Reviews for this product
You may also like



