オムロン 単相ソリッドステートリレー G3PA-260B-VD

製品タイプ: Single-phase SSR (ソリッドステート リレー), integrated heat sink, zero-cross turn-on

入力: DC 5~24V; 出力: AC 24~240V, 60A @ 40℃

1. 主な仕様

Control Input: DC 5–24V, max control current 7mA; operate voltage ≤4V, release voltage ≥1V

負荷電圧: AC 24～240V (operating range 19～264VAC, 50/60Hz)

定格電流: 60あ (AC-1, 40℃); derate to 48A when densely installed side-by-side

Surge Current: 440あ (60Hz, 1 サイクル); VDRM 600V

On-state Voltage Drop: ≤1.6V RMS; Off-state Leakage Current: ≤20mA @ 200VAC

トリガーモード: Zero-crossing Turn-on, minimizes inrush & EMI

分離: Phototriac optocoupler isolation

絶縁耐力: 4000VAC 1min; Insulation Resistance ≥100MΩ (DC500V)

取り付け: DINレール / ネジ取付; with operation indicator

周囲温度: -30～+80℃ (結露なし); ストレージ: -30～100℃

特徴: Replaceable power cartridge for low maintenance cost

2. モデル番号のデコード

G3PA: Series of high-current SSR with replaceable power modules

2: Output voltage class AC24–240V (4 = AC200–400/480V high voltage)

60: Rated current 60A

B: Integrated heat sink

VD: DC voltage input (DC5–24V)

3. 代表的な用途

Resistive AC loads such as heating tubes, infrared lamps, ファンとコンベア; directly driven by PLC transistor outputs.

注記: Add varistor/RC snubber for inductive motor loads; never operate over current or over temperature.

4. Same Series Cross Reference

G3PA-240B CEO: AC24–240V, 40あ

G3PA-430B-VD: AC200–400V, 30あ

5. Domestic Equivalents (DC5-24V input, AC24-240V, 60A zero-cross SSR)

Meigeer MGR-1 D60

Ximanton H360ZF

Yangming SSR-60DA-H

Application Scenarios for G3PA-260B-VD

Core features summary: DC5–24V control, AC24–240V single-phase output, 60あ, zero-cross trigger, built-in heat sink, field-replaceable power cartridge, PLC direct drive, contactless, high-frequency switching. First choice for resistive heating loads.

リマインダー: This is a single-phase SSR; 使用 3 units in parallel for 3-phase heating control (one per phase).

主な用途 (ベストマッチ)

1. Temperature-controlled heating systems (largest application)

工業用オーブン, drying cabinets, thermostatic baths, 老化試験室; barrel heating for injection & extrusion machines, mold temperature controllers; heat-seal blades, hot plates on packaging machines; electroplating tank heaters, thermal oil heaters.

アドバンテージ: Zero-cross switching avoids voltage spikes; matches PID time-proportion control from temperature controllers; contact-free design delivers ultra-long life for frequent cycling.

2. High-power resistive lighting

Infrared heating lamps, halogen lamps, greenhouse supplementary lighting arrays.

✘ Not recommended: Fluorescent lamps & LED電源 (inductive/capacitive surge loads).

3. Light-duty fans & コンベア (inductive loads with surge protection)

小型遠心ファン, hot air circulation blowers, single-phase conveyor motors with infrequent starts.

⚠️ Motors are inductive loads; external varistor/RC snubber is mandatory to suppress back EMF, otherwise the SSR will break down easily. Not suitable for large motors or frequent forward/reverse operation.

Other General Automation Applications

1. 包装機械: Heat shrinkers, hot-knife cutters, hot air power control
2. ゴム & plastic equipment: Heating platens for vulcanization & thermoforming molds
3. Environmental test equipment: Heating circuits in temperature & humidity chambers
4. 食品機械: Baking lines, fryer heating elements, thermal blanching equipment
5. 空調設備: Electric duct heaters, auxiliary air-conditioning heating sections
6. Cabinet power distribution: リレーを交換する + コンタクタの組み合わせ; quiet, arcless operation, DINレールの取り付け.

When to choose this SSR instead of electromagnetic contactors

頻繁なオン/オフの繰り返し & PID power regulation (switching every several seconds)

Controlled by PLC or temperature controller DC24V transistor outputs

No arc noise, no contact burn-out & low maintenance required

DIN rail mounting with limited cabinet space, integrated heat sink included

Quick power cartridge replacement without full rewiring later

Unsuitable / Restricted Applications

Direct-on-line starting of large motors, frequently started pumps (high inrush current causes instant damage)

Capacitive loads, large switching power supply banks

400VAC loads (max rated voltage only 264VAC)

直流負荷 (this model is AC-output SSR only)

Circuits requiring short-circuit protection: SSR has no built-in short-circuit protection; fuse/circuit breaker must be installed upstream.

Sizing Tips

Derate to 48A when tightly mounted side-by-side (80% 定格電流); always leave current margin.

誘導負荷: Fit external 471K (470V, ≥1000A) varistor across output terminals, shortest wiring possible.

3-phase heating scheme: 3 independent G3PA-260B-VD, one per phase, keep 3-phase load balanced.

PID Power Regulation Wiring + Varistor Selection + Derating Installation Standard

キーノート: This is a zero-crossing SSR, designed exclusively for time-proportion PID power regulation, not for phase-angle voltage regulation. DC5~24V input, control current ≤7mA; PLC transistor outputs and temperature controller SSR ports can drive it directly without auxiliary relays.

1. PID Control Wiring (温度調節器 / PLC)

端子の定義 (G3PA-260B-VD)

Control Input: A1(+), A2(-) (DC5~24V; reverse polarity will not burn the unit, just no operation)

Power Output: Line IN, Line OUT (series-connected on live wire, 24~240VAC)

Recommended wiring: MCB → semiconductor fast fuse → SSR output → Load → Neutral (N wire bypasses SSR entirely).

スキーム 1: Driven by オムロン E5CC/E5EC Temperature Controller (Most Common Heating Loop)

1. SSR output of temperature controller → A1(+), A2(-) of G3PA
2. Separate power supply & PT100 thermocouple wiring
3. Critical parameter settings

出力モード: SSR / Time Proportion (Zero-cross); DO NOT select phase-angle mode

Cycle Time (T): 20~40s for resistive heating; 30s for ovens & mold heaters. Too short a cycle causes overheating; too long creates large temperature fluctuations.

Run AT auto-tuning after stable temperature holding.

注記: Open-collector outputs on temperature controllers have built-in 24VDC drive power, directly compatible with G3PA.

スキーム 2: PLC Transistor DO Drive (PNP / NPN)

PNP出力: PLC Y terminal → A1(+); 0V of 24VDC → A2(-)

NPN出力: 24VDC+ → A1(+); PLC Y terminal → A2(-)

PLC program: Use fixed-cycle duty-cycle output (例えば. 30s period, 0～100%). Avoid high-frequency PWM which overheats the thyristor.

Only 7mA input current; standard PLC transistor outputs can drive it without current-limiting resistors.

3-phase Heating (3× G3PA-260B-VD)

Independent phase control: one single-phase SSR per A/B/C phase. Inputs can share multi-channel SSR outputs from one temperature controller or multiple PLC DO points.

⚠️ This is not a 3-phase SSR; のみ 3 separate single-phase units, keep load current balanced across 3 フェーズ.

2. バリスタ & RC Snubber Selection (Mandatory for Inductive Loads)

The G3PA has an internal varistor, but inductive back EMF exceeds internal absorption capacity; external MOV is required, wired directly across SSR output terminals with minimal lead length.

220VAC System (主な用途)

バリスタ: 14D471K (470V, ≥1000A surge current); 10D471K also acceptable.

110VAC System: 14D271K (270V, ≥1000A)

RCスナバ (for solenoid valves, 小型ファン & 変圧器):

C=0.047~0.1μF / 630VAC; R=100~220Ω / 2W, series RC across output terminals.

✅ Resistive heating tubes: External snubber optional; ✅ Fans, コイル & transformers will blow the SSR without external MOV.

Upstream Fuse Protection (致命的: SSR has no short-circuit protection)

Semiconductor SSR fails instantly under short-circuit conditions; use aR/gR semiconductor fast fuses, not standard gG general fuses.

Resistive heating loads: 80A fast fuse (1.2~1.5× rated current of 60A)

Inductive fan loads: 100A fast fuse

Install fuse immediately upstream of the SSR to shorten fault loop length.

3. ディレーティング & 設置仕様 (G3PA-260B-VD Special Rule)

The G3PA-260B-VD cannot be tightly mounted side-by-side (stated in official datasheet), different from 240B/220B models.

1. Full rating condition: Vertical independent mounting, ≥10mm clearance left & 右, ambient temp ≤40℃ → 60A full current.
2. Densely arranged on DIN rail:

2 or more units installed tightly together: Max current limited to 48A (80% ディレーティング).

4+ units side-by-side: Maintain ≥10mm gap between adjacent SSRs, otherwise overheating failure occurs.

縦積み: ≥80mm vertical gap between upper & lower SSRs to keep airflow.

3. Horizontal flat mounting (heat sink sideways): Derate current by an additional 30%; avoid this mounting orientation.
4. Cabinet ambient >40℃: Further derate current per temperature derating curve; add cabinet cooling fans.
5. 端子トルク: M3.5ネジ端子, tighten to 0.8~1.2N·m. Loose terminals cause overheating & burnt terminals.
6. Cartridge replacement: G3PA allows standalone replacement of the G32A power cartridge without rewiring main power circuits, ideal for bulk maintenance.
7. Commissioning Troubleshooting Checklist
8. Never use this zero-cross SSR for phase-angle dimming/power control; it only supports time-proportion ON/OFF power regulation.
9. Off-state leakage: ≤20mA residual voltage across load when SSR is OFF; always isolate upstream MCB before maintenance.
10. Do not add large series resistors on input side; low voltage will cause false triggering.
11. Separate DC24V control wiring from high-current power cables to avoid EMI interference.
12. Cold heating element inrush current: Limit heater rated current to ≤70% of SSR rated current for extra safety margin.
13. Quick Fault Diagnosis

Indicator ON, load no heat: Open circuit on main circuit, ヒューズが切れた, broken heater element.

Indicator OFF: No input voltage/polarity reversed, temperature controller output disabled, PLC program no output.

Repeated SSR breakdown: No external MOV for inductive loads, insufficient heat dissipation, oversized fuses, frequent mains voltage surges.

Severe temperature oscillation: PID cycle time too short, P-gain too high, poor thermal insulation, thermocouple misposition.

OMRON Single-Phase SSR + Electromagnetic Power Relay List

注記: All SSRs are zero-crossing, opto-isolated. G3PA series (your current model) features replaceable power cartridges, integrated heat sink & DINレール取付. G3NA/G3NE are cost-effective compact SSRs. Electromagnetic relays are plug-in cabinet relays for PLC & temperature control loops.

一部 1: G3PA Series (Single-phase SSR, Priority Model)

Replaceable Power Cartridges

G32A-A20-VD-X: For G3PA-220B

G32A-A40-VD: For G3PA-240B

G32A-A60-VD: For G3PA-260B

一部 2: G3NA Economy Single-phase SSR (No integrated heat sink)

一部 3: G3NE Compact Mini SSR (Space-saving low-power use)

一部 4: G3PJ / G3PE New Generation SSR (Spring terminals, high surge resistance)

G3PJ-225B: AC24–240V, 25あ, DC5–24V

G3PJ-245B: AC24–240V, 45あ, DC5–24V

G3PE-225B: AC24–240V, 25あ, DC5–24V

G3PE-245B: AC24–240V, 45あ, DC5–24V

モデルのコーディング規則:

2 = AC24~240V (220V heating mainstream)

4 = AC200~400/480V high voltage

VD = DC input; A = AC input

一部 5: OMRON Electromagnetic Power Relays (Plug-in cabinet type)

1. G2R Series (General-purpose Intermediate Relays)

2. LY High-current Plug-in Power Relays (Replace small contactors)

3. G7L High-capacity Power Relays (30A direct single-phase load control)

4. G6B / G6D PCB Mini Relays (Onboard PLC & 温度コントローラー)

G6B-1174P: 1ある, 5あ, DC24V

G6D-1A: 1ある, 5あ, DC24V

一部 6: セレクションガイド: SSR vs Electromagnetic Relay

1. 加熱, PID power regulation, 頻繁な切り替え & arcless operation → G3PA (第一選択) / G3NA
2. PLC DO signal conversion, low-frequency switching → G2R intermediate relay
3. ≤30A low-frequency single-phase loads, cost-sensitive → G7L / LY relays
4. Low-power, space-restricted applications → G3NE, G3PJ