Murphy VS2EX （20700049） 防爆振动开关

VS2EX：防爆冲击和振动开关，符合 IP54 规格，1 类，1 类，C 组和 D 组（20700049）

VS2EX 系列开关是用于关闭发动机或电动机供电设备的震动敏感机构。这些可调磁冲击开关具有广泛的范围，并使用磁性闩锁以确保可靠运行。VS2EX具有底座安装外壳，防爆铝合金外壳;符合 NEMA 7/IP50 规范;I类，I区，C组和D组;UL 和 CSA 认证具有 480 VAC 额定值。该型号使用 2-SPDT 微动开关代替叶片型触点。灵敏度可从外部调节，当跳闸时，VS2EX 会在复位按钮上发出 Tattletale 指示。VS2EX 非常适合用于发动机、泵、压缩机、热交换器和泵组 - 可用于任何需要停机保护免受破坏性冲击/振动保护的地方。开关可根据每种应用所需的灵敏度进行现场调节。我们可以提供 VS2EX 的合格证书，但没有校准报告。VS2EX没有校准报告。

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

基本操作：
按下复位按钮可将脱扣闩锁移动到磁性保持位置。冲击/振动将使磁铁超出此保持位置，从而释放弹簧加载的脱扣闩锁以转移触点并关闭机器（参见尺寸图或零件的视觉表示）。

文献：
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安装说明

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)