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Bestact, Heavy Duty Reed Contact element0 pages
^YASKAWA
Bestact ™Heavv-dutv Reed Switches
Highly Reliable Contact Employing New Materials and Innovative Designs such as wiping and Hammering Action,
Bifurcated contact and Back-stop Mechanism
■ FEATURES
1 Sealed with an inert gas, ensuring freedom from aging and influences exerted by external environment.
2 The bifurcated contact and "wiping action" assures outstanding contact reliability, probability of failure
is extremely low.
3 Quick action permits a larger make and break capacity and longer service life.
4 Can switch both AC and DC, permitting direct control over a wide range from low level load to
electromagnetic power load.
5 Near surge-less switching of inductive load.
Medium-capacity type: 24V 1mA to 240VAC 0.5A
(5A making)
Contact Ratings: C300 (AC) and Q150 (DC)
180VA & 69VA respectively
Large-capacity type: 24V 1mA to 240VAC 1A
(1 OA making) 230VDC 40W (Solenoid valve)
Contact Ratings: C600, B300 (AC), Q300 (DC),
360VA & 69VA respectively
■ CONSTRUCTION AND OPERATING MECHANISM
Conventional reed switches are constructed simply. The contact for switching current also serves to switch the magnetic
circuit. Bestact uses a separate magnetic member and contact unit (current carrying arcing section), each using different
materials and design optimized for their functions.
CONVENTIONAL:
MAGNETIC MEMBERS
AND CONTACT PART MOVABLE REED
BESTACT:
MOVABLE CONTACT
MAGNETIC MEMBERS
TERMINAL
BACKSTOP
MECHANISM
WHEN OPERATING" ^ WHEN RELEASINGt
HINGE POINT
STATIONARY REED
RATINGS AND SPECIFICATIONS
STATIONARY REED
HERMETICALLY
SEALED GLASS
CONTAINER
Note: x Wiping action when
operating (Step(2)-K?))
t Hammering action when
releasing (Step©)
Application | Medium-Capacity Type | Large-Capacity Type | Remarks | ||
Type | R25U | R15U | |||
Contact Arrangement | 1NO | 1NO | |||
Contact Performance | Rated Insulation Voltage | 250VAC | 250VAC | Power Frequency | |
Rated Continuous Current | 3A | 5A | |||
Rated conditional short-circuit current | Ratings of short-circuit protection device; 5A 250V, quick acting fuse type | In accordance with IEC 62246-2, 3.31 | |||
Rated Operational Current*1 | AC-15 | 240V0.5A(180VA, 1/4 HP) | 240V1A(360VA, 1/2 HP) | NEMA pilot duty horsepower | |
DC-13 | 115V0.3A(69VA) L/R = 40ms | 115V 0.5A, 230V 0.2A (69VA) L/R= 100ms | NEMA pilot duty | ||
Maximum Making Current | 240VAC 15A | 240VAC 30A | Min. 10 making cycles in accordance with IEC 62246-2, 3.34 | ||
Maximum Breaking Current | 240VAC 15A | 240VAC 30A | Min. 10 breaking cycles in accordance with IEC 62246-2, 3.35 | ||
115VDC 0.5A (L/R = 40ms) | 115VDC 0.6A (L/R = 100ms) 230VDC 0.4A (L/R = 100ms) | ||||
Minimum Operational Power Ratings | 24V 1mA (5V 1mA digital load) | 24V 1mA (5V 1mA digital load) | In accordance with IEC 62246-2, 3.32 | ||
Withstand Voltage across Contacts | 500VAC 1 minute | 800VAC 1 minute | |||
Insulation Resistance | 109tl or greater | 109Q or greater | With 500VDC megger | ||
Initial Contact Resistance | 500m Q or less | 500m Q or less | 6VDC 1A | ||
Operational Characteristics | Pick-up Ampere Turn | 100 to 130 AT | 180to230AT | Standard coil is 3000tums, 33.5 mm long, 10.5mm I.D. with 0.2mm dia. wire. | |
Drop-out Ampere Turn | 50AT or greater | 60AT or greater | |||
Operating Time | 4ms or less (Bounce not included) | 4ms or less (Bounce not included) | at 150% of pick-up ampere turn Using standard coil | ||
Releasing time*2 | 2ms or less | 2ms or less | |||
Mechanical life | Over 100,000,000 operations | Over 100,000,000 operations | In accordance with IEC 62246-2, 3.24 | ||
Mechanical Performance | Vibration Resistance | 147.0m/s2 (15G) or greater | 196.0m/s2 (20G) or greater | 20 to 1 000Hz | |
Impact Resistance | 196.0m/s2 (20G) or greater (980.0m/s2 (100G) or greater) | 392.0m/s2 (40G) or greater (980.0m/s2 (100G) or greater) | Value in parenthesis indicates breakdown G | ||
Robustness of terminals | 98.0N (10kgf) | 98.0N (10kgf) | |||
Ambient Temperature | Operational Temperature | -50to+150'C | -50 to+150*0 | ||
Storage | -60to+180t: | -60 to+180*0 | |||
Note: *1. Where 240VAC, the rated operational current of 1A means 10A making and 1A breaking. Where 115VDC is indicated, the current is set at 1 times this value.
*2. The releasing time indicates the value when the coil is equipped with a flywheel diode.
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