Murphy VS2EX （20700049） 防爆振動開關

VS2EX：防爆沖擊和振動開關，符合 IP54 規格，1 類，1 類，C 組和 D 組（20700049）

VS2EX 系列開關是用于關閉發動機或電動機供電設備的震動敏感機構。這些可調磁沖擊開關具有廣泛的范圍，并使用磁性閂鎖以確保可靠運行。VS2EX具有底座安裝外殼，防爆鋁合金外殼;符合 NEMA 7/IP50 規范;I類，I區，C組和D組;UL 和 CSA 認證具有 480 VAC 額定值。該型號使用 2-SPDT 微動開關代替葉片型觸點。靈敏度可從外部調節，當跳閘時，VS2EX 會在復位按鈕上發出 Tattletale 指示。VS2EX 非常適合用于發動機、泵、壓縮機、熱交換器和泵組 - 可用于任何需要停機保護免受破壞性沖擊/振動保護的地方。開關可根據每種應用所需的靈敏度進行現場調節。我們可以提供 VS2EX 的合格證書，但沒有校準報告。VS2EX沒有校準報告。

Murphy Shock / Vibration Control Switches
Models: VS2, VS2C, VS2EX, VS2EXR, VS2EXRB and VS94
PDF Catalog free download

基本操作：
按下復位按鈕可將脫扣閂鎖移動到磁性保持位置。沖擊/振動將使磁鐵超出此保持位置，從而釋放彈簧加載的脫扣閂鎖以轉移觸點并關閉機器（參見尺寸圖或零件的視覺表示）。

文獻：
銷售文檔
安裝說明

VS2EX (20700049): Explosion-Proof Shock & Vibration Switch

VS2EX: Explosion-Proof Shock & Vibration Switch, Meets IP54 Specs, Class 1, Div 1, Groups C & D (20700049)

The VS2EX Series switches are shock sensitive mechanisms for shutdown of engine or electric motor-powered equipment. These adjustable magnetic shock switches have a wide range and use a magnetic latch to ensure reliable operation.

The VS2EX has a base mounted case, explosion-proof aluminum alloy housing; meets NEMA 7/IP50 specifications; Class I, Division I, Groups C & D; UL and CSA listed with 480 VAC rating. In place of the leaf-type contacts, 2-SPDT snap-switches are used in this model. Sensitivity is externally adjustable and, when tripped, the VS2EX gives a Tattletale indication on the reset button.

Ideal for use on engines, pumps, compressors, heat exchangers and pumping units - the VS2EX can be used anywhere shutdown protection from damaging shock/vibration is desired. Switches are field adjustable to sensitivity required in each application. Wecan provide a certificate of conformance for the VS2EX, but no calibration report is available.

There is no calibration report for the VS2EX.

Basic Operation:
Pushing the reset button moves the tripping latch into a magnetically held position. A shock/vibration will move the magnet beyond this holding position, thus freeing the spring-loaded tripping latch to transfer the contacts and shut down the machinery (see dimensional diagrams or visual representation of parts).

Literature:
Sales Bulletin
Installation Instructions

For California customers: Prop 65 WARNING: This product may have been manufactured with or uses components that can expose you to chemicals which are known to the State of California to cause cancer. For more information go to www.p65warnings.ca.gov.

The VS2 Series switches are shock-sensitive mechanisms for shutdown of engine or electric motor powered equipment. It is designed to detect shock/vibration in three planes of motion.

These fully adjustable switches use a magnetic latch to ensure reliable operation. Explosion-proof EX models for hazardous locations are available.

Ideal for use on engines, pumps, compressors, heat exchangers and pumping units, the VS2 Series can be used where shut-down protection from damaging shock/vibration is desired. Switches are field adjustable to the sensitivity required in each application.

Basic Operation
Pushing the reset button moves the tripping latch into a magnetically held position. A shock/vibration will move the magnet beyond this holding position, thus freeing the spring loaded tripping latch to transfer the contacts and shut down the machinery (see dimensional diagrams or visual representation of parts).

Remote Reset Operation (VS2EXR and VS2EXRB)
The remote reset option includes a built-in electric solenoid which allows reset of tripped unit from a remote location. Available for 115 VAC or 24 VDC.

Specifications

Normal Operating Temperature: -40° to 185°F (-40° to 85°C); For UL and CSA applications, applicable temperature specification is de-rated to -40° to 140°F (-40° to 60°C)
VS2 and VS2C
Case: Environmental Protection: Ingress protected to IP54 (when mounted on a horizontal surface with drain holes down). Suitable for non-hazardous areas. VS2C: C-clamp mount, includes 45 ft. (13.7 m) 2-conductor cable and 5 cable clamps
Contacts: SPDT-double make leaf contacts, 3A @ 240 VAC; 10A @120 VAC; 10A @ 32 VDC
Shipping Weight: VS2: 2 lb. 8 oz. (1.1 kg); VS2C: 7 lb (3.2 kg)
Shipping Dimensions: VS2: 8-1/4 x 9-1/4 x 5 in. (210 x 235 x 127 mm); VS2C: 12 x 7 x 5-1/2 in. (305 x 178 x 140 mm)
VS2EX
Case: Base mount, explosion-proof aluminum alloy housing; meets IP54 specifications; Class I, Division 1, Groups C & D; UL and CSA listed
Certification: CSA, UL
Snap switches: 2-SPDT snap switches; 5A @ 480 VAC; 2A resistive, 1A inductive, up to 30 VDC
Shipping Weight: 4 lb. 8 oz. (2 kg)
Shipping Dimensions: 8-1/4 x 9-1/4 x 5 in. (210 x 235 x 127 mm)
VS2EXR
Case: Same as VS2EX
Certification: CSA, UL
Snap switch: 1-SPDT snap switch and reset coil; 5A @ 480 VAC; 2A resistive, 1A inductive, up to 30 VDC
Remote Reset: 115 VAC or 24 VDC (specify)
Shipping Weight: 5 lb. 8 oz. (2.2 kg)
Shipping Dimensions: 8-1/4 x 9-1/4 x 5 in. (210 x 235 x 127 mm)
VS2EXRB
Case: Explosion-proof aluminum alloy housing; designed to meet Class I, Division 1, Group B hazardous areas
Certification: No third-party certification
Snap switch: 1-SPDT snap switch with reset coil (option available for 2-SPDT switches); 5A @ 480 VAC; 2A resistive, 1A inductive, up to 30 VDC
Remote Reset: 115 VAC or 24 VDC (specify)
Shipping Weight: 17 lb. 8 oz. (7.9 kg)
Shipping Dimensions: 12 x 12 x 10 in. (305 x 305 x 254 mm)