V320PA40A Equivalent Base Mount Metal Oxide Varistor PA20-511
High-performance transient surge suppressors designed for industrial applications requiring reliable surge protection and vibration resistance.
Product Overview
Engineered with reliable installation features and flat electrodes for optimal heat exchange, the PA varistor series is ideal for applications with strong vibration or high power consumption industrial electronic products. The flat electrodes are soldered with metallized discs and potted in bakelite housing using non-flammable, insulating materials.
Applications
Widely used in industrial automatic control equipment, power supply control, water supply systems, petroleum equipment, mining equipment, railway signal systems, and other critical industrial applications.
Construction & Features
- Construction: Flat electrode soldered with metallized disc potted in bakelite housing
- Potting materials: Non-flammable, insulation and explosion protection potting resin-retardant to UL 94 V-0
- Terminals: Tinned copper plate
- Package: Box
Technical Specifications
| Varistor voltage (V1mA) |
459V ~ 510V ~ 561V |
| Max. continuous operating voltage |
Vrms: 320V; VDC: 410V |
| Rated power |
1.0W |
| Max. clamping voltage (8/20μs) |
VC: 850V; IC: 100A |
| Surge current (1×8/20μs) |
10000A (8/20μs) |
| Max. energy |
273J (2ms) |
| Typical capacitance |
1050pF (1KHz) |
| Leakage current |
Not more than 10μA (75% of V1mA (DC)) |
| Operating temperature |
-25℃ ~ +85℃ |
| Storage temperature |
-25℃ ~ +125℃ |
Model Comparison: PA20-511 vs. PA20-511C
| Parameter |
PA20-511 |
PA20-511C |
| Part Number |
PA20-511 |
PA20-511C |
| Varistor voltage (V1mA) |
459~561V |
459~534V |
Cross Reference List
PA Series (Bakelite Housing, peak current(8/20μs) 10kA) Metal Oxide Varistor with UL approval
| CNAMPFORT |
Littelfuse/Harris |
PANASONIC(ZNR) |
Epcos(SIOV) |
MAIDA |
CKE |
| PA20-201 |
V130PA20A |
/ |
/ |
/ |
/ |
| PA20-201C |
V130PA20C |
/ |
/ |
/ |
/ |
| PA20-241 |
V150PA20A |
/ |
/ |
/ |
/ |
| PA20-241C |
V150PA20C |
/ |
/ |
/ |
/ |
| PA20-391 |
V250PA40A |
/ |
/ |
/ |
/ |
| PA20-391C |
V250PA40C |
/ |
/ |
/ |
/ |
| PA20-431 |
V275PA40A |
/ |
/ |
/ |
/ |
| PA20-431C |
V275PA40C |
/ |
/ |
/ |
/ |
| PA20-511 |
V320PA40A |
/ |
/ |
/ |
/ |
| PA20-511C |
V320PA40C |
/ |
/ |
/ |
/ |
| PA20-681 |
V420PA40A |
/ |
/ |
/ |
/ |
| PA20-681C |
V420PA40C |
/ |
/ |
/ |
/ |
| PA20-751 |
V480PA80A |
/ |
/ |
/ |
/ |
| PA20-751C |
V480PA80C |
/ |
/ |
/ |
/ |
| PA20-821 |
V510PA80A |
/ |
/ |
/ |
/ |
| PA20-821C |
V510PA80C |
/ |
/ |
/ |
/ |
| PA20-911 |
V575PA80A |
/ |
/ |
/ |
/ |
| PA20-911C |
V575PA80C |
/ |
/ |
/ |
/ |
| PA20-112 |
V660PA100A |
/ |
/ |
/ |
/ |
Product Images
