The JB series small and lightweight thyristor regulators for single-phase loads are characterized with high panel installation density. 6-models from 10A rated current to 100A rated current are available. Two control systems, a phase-angle firing system and a zero-cross firing system, are built.
| Compact and standalone, mounting space-saving, easy wiring. |
| Phase-angle firing/zero-cross firing can be selected according to applications, power source environment, etc. |
| Soft-start, soft-up/down and soft-start at power failure recovery for precise control0. |
| Automatic frequency judgment function, ramp setting function and low limit setting function are built-in. |
| Model | Rated current |
| JB-2020 | 20A |
| JB-2030 | 30A |
| JB-2040 | 40A |
| JB-2050 | 50A |
| JB-2075 | 75A |
| JB-2100 | 100A |
| Phase | Single-phase |
| Rated current | 20, 30, 40, 50, 75, 100A (to be specified) |
| Rated voltage | 100 to 120VAC, 200 to 240VAC (selectable by terminals) |
| Rated frequency | 50/60Hz (automatic change) |
| Input signal | 4 to 20mADC, 1 to 5VDC or ON-OFF contact signal (selectable by terminals) |
| Input resistance | 100Ω (4 to 20mADC), 25 (1 to 5VDC) |
| Output range | 0 to 98% of rated voltage |
| Minimum load current | 0.5A (at 98% output) |
| Applicable load | Resistive load, inductive load (primary side control of transformer, flux density 1.2T or lower, phase-angle firing system only) |
| Control system | Phase-angle firing/zero-cross firing (selectable by internal dip switches) |
| Output setting range |
Ramp setting (0 to 100%) Low limit setting (0 to 100%) |
| Over-current protection | Thyristor gate-off (120% or more of rated current, on built-in or external CT) |
| Other functions | Soft-start, soft-up/down (1 to 20 seconds), soft-start at power failure recovery |
| Dimension |
H172 x W48 x D143mm (for 20A, 30A) H188 x W68 x D148mm (for 40A, 50A) H200 x W116 x D157mm (for 75A, 100A) |
| Weight | About 1.0kg for 20A and 30A, about 1.3kg for 40A and 50A, about 1.9kg for 75A and 100A |
| Performance Specification Sheet | Single-Phase Thyristor Regulators | JB series | Download |
