シーメンス 3SE3120-1E リミットスイッチ

Siemens 3SE3120-1E Heavy-Duty Metal Enclosure Limit Switch (トラベルスイッチ)

SIRIUS 3SE3 シリーズ金属筐体付き耐久性リミットスイッチ, 1NO+1NC スナップアクション接点とローラーレバーアクチュエーターを装備. IP67定格, 過酷な産業環境に適しています.

型式コードの説明

コードセグメント	説明
3SE3	Siemens SIRIUS series heavy-duty limit switch with metal enclosure
120	ベーシックモデル: 40mm wide housing, Pg13.5 cable gland, double-break snap-action contacts
-1E	アクチュエーター: Standard single roller lever, 1NO+1NC contact configuration

Important Notice: このモデルは生産終了しました. The official replacement is 3SE5112-0CE01.

技術仕様

アイテム	パラメータ	備考
接点構成	1 通常開 (いいえ) + 1 通常閉 (ノースカロライナ州)	Double-break snap-action design
定格電流 / 電圧	10あ / 500Vと	AC-15: 2.5あ / 400V
定格電流 / 電圧	10あ / 600ワシントンDCで	DC-13: 0.4あ / 24V
作動機構	Single roller lever	Mechanical life ≥ 10,000,000 オペレーション
ハウジング材質	Die-cast aluminium	Robust and impact-resistant
侵入保護	IP67	Dust-tight and water-resistant; temporary immersion permitted
ケーブル入口	Pg13.5 cable gland	Suitable for cables with outer diameter 9-14mm
取付タイプ	表面実装 / DINレール取付	Compatible with various mounting brackets
周囲温度	-25°C ~ +80°C	Adaptable to harsh working conditions
準拠基準	IEC 60947-5-1, で 50041, VDE 0660	Compliant with international industrial safety standards
機械的寿命	≥ 10,000,000 オペレーション	Electrical life ≥ 100,000 operations under rated load

クロスブランド交換リスト (直接交換)

ブランド	モデル	互換性	参考価格 (人民元)	利点
シーメンス (交換)	3SE5112-0CE01	100%	450-550	Official replacement, 完全に互換性のある
シュナイダーエレクトリック	XCKN2118P16	95%	380-480	Identical contact configuration, IP67等級
ABB	LS31P11	90%	350-420	Cost-effective with global warranty
チント (国内)	YBLX-ME/8108	90%	120-180	Competitive price, fast local delivery
美味しい (国内)	LXK3-20S/T	85%	100-150	Economical choice for bulk replacement

Common Models of 3SE3 Series

トラブルシューティング & メンテナンスガイド

故障現象	考えられる原因	Inspection Steps	ソリューション
Contacts fail to operate	1. Jammed lever	1. Check smooth mechanical movement	1. Remove foreign matters and lubricate the shaft
	2. Damaged return spring	2. Test spring reset force	2. Replace the spring
	3. Worn contacts	3. Measure contact resistance	3. Replace contact assembly
Contact sticking	1. 過負荷動作	1. Verify load against rated value	1. Reduce load or select higher-capacity model
	2. Arc erosion	2. Check contact surface for burn marks	2. Replace contacts
	3. Excessive dust accumulation	3. Inspect sealing integrity	3. Renew seals for better protection
Unstable signal	1. 配線の緩み	1. Tighten terminal connections	1. Retighten cables
	2. Oxidized contacts	2. Measure contact resistance	2. Clean contact surfaces
	3. Excessive vibration	3. Check mounting tightness	3. Add vibration damping measures

メンテナンス品	間隔	手術
目視検査	毎月	Check housing damage and sealing condition
機械動作試験	四半期ごと	Manually actuate the lever to ensure smooth movement
Contact Performance Test	Semi-annually	Measure contact resistance, ensure value ≤ 50mΩ
クリーニング & 潤滑	毎年	Remove internal dust; lubricate shafts with silicone grease
Seal Replacement	毎 2 年	Replace cable glands and O-rings

応用 & 業界の事例

工作機械: Travel limit for worktables and position detection for cutting tools

自動生産ライン: Conveyor positioning and workpiece detection

昇降装置: Travel limit protection and anti-collision detection

包装機械: Position control for cutting & sealing and roll tension detection

冶金産業: Position detection under high temperature (heat shield required)

Severely Corrosive Environments: Direct exposure to acid or alkaline solutions (stainless steel enclosure model recommended)

Explosive Hazardous Areas: Adopt explosion-proof limit switches of 3SE5 series

高精度位置決め: For accuracy within ±0.1mm, proximity switches or encoders are preferred

場合 1: Automotive Stamping Production Line

応用: Travel limit protection for stamping press slides

解決: Install 3SE3120-1E at upper and lower limit positions to cut off power when the slide reaches the limit

Result: Prevent equipment overload damage, improve operational safety; annual failure rate < 0.5%

場合 2: Automated AS/RS Warehouse

応用: Rail limit and cargo location detection for stackers

解決: Mount 3SE3120-1E at rail ends and cargo positions to realize precise positioning and safety protection

Result: Improve automation level, reduce manual intervention; positioning accuracy up to ±5mm

3SE3 series features metal housing and IP67 protection; 1E stands for single roller lever with 1NO+1NC contacts.
Choose metal enclosure for heavy-duty use, and plastic enclosure (3SE5) for light-duty applications.
For the discontinued model, use 3SE5112-0CE01 as direct replacement.
Domestic alternatives from Chint and Delixi cut costs by half while retaining around 90% パフォーマンス.