Electrical Solutions
Replacement for Siemens 3VA Breaker Lockout/Tagout Padlocking Device

Direct-Fit Lockout/Tagout (LOTO) Device for Siemens 3VA Series Breakers
Designed as a direct replacement for OEM Siemens locking mechanisms (3VA9378-0LB10 and 3VA9038-0LB10), this lockout/tagout device provides reliable OSHA-compliant lockout protection for industrial circuit panel maintenance.
- Direct OEM Replacement: Engineereed to seamlessly replace OEM part numbers 3VA9378-0LB10 and 3VA9038-0LB10.
- Material Options: Available in heavy-duty 6061 billet aluminum for high-impact industrial environments or high-density plastic for dielectric and lightweight applications.
- Precise Breaker Compatibility:
- 3VA9378-0LB10 Replacement: Fits Siemens 3VA Molded Case Circuit Breakers across 3VA52 (250A), 3VA61 (125A), and 3VA62 (250A, 3/4-pole) frames.
- 3VA9038-0LB10 Replacement: Fits Siemens 3VA51 (125A) circuit breakers.
- 1-Year Warranty: Backed by our comprehensive 1-year warranty on all LOTO devices.


3VA Series Siemens-Compatible Circuit Breaker Lockout Device
SKU: 2121-3VA9-01A, 2121-3VA9-01P, 2121-3VA9-02A, 2121-3VA9-02P
Availability: In Stock
Warranty: 1-Year Manufacturer Warranty Included
Select Part Number / Compatibility
- Replacement for Siemens 3VA9038-0LB10
- Fits: 3VA51 Frame (125A)
- Replacement for Siemens 3VA9378-0LB10
- Fits: 3VA52 Frame (250A), 3VA61 Frame (125A), 3VA62 Frame (250A 3/4-Pole)
Select Material Construction
- Heavy-Duty 6061 Aluminum (Maximum durability / High-impact environments)
- High-Density Plastic (Lightweight / Dielectric non-conductive protection)
Volume Tiered Pricing & Quantity
| Order Quantity | Price per Unit | Tier Status |
| 1 – 9 Units | $80.00 | Standard Price |
| 10 – 49 Units | $75.00 | Tier 1 Bulk Discount (6.25% Off) |
| 50 – 99 Units | $69.00 | Tier 2 Bulk Discount (13.75% Off) |
| 100+ Units | Custom Quote | Enterprise / Distributor Rates |